Explanation:
There is a well-known relationship between the bond length of a diatomic molecule and the atomic radius of its constituent atoms, known as the covalent radius. Specifically, the covalent radius of an atom is half the bond length between two identical atoms in a diatomic molecule.
Therefore, to determine the atomic radius of chlorine (Cl), we can use the bond length of fluorine (F2) and the fact that the two atoms in F2 are identical.
Since the bond length of F2 is given as 1.28 A, the covalent radius of fluorine is 1.28/2 = 0.64 A.
Since both fluorine and chlorine are halogens, they have similar electronic configurations and form similar covalent bonds. Therefore, we can use the covalent radius of fluorine as an estimate for the covalent radius of chlorine.
Thus, the atomic radius of chlorine is approximately 0.64 A.

Rank the bonds in each set in order of increasing bond length and increasing bond strength: (a) C≡N, C≡O, C≡C; (b) P-I, P-F, P-Br. And Rank the bonds in each set in order of decreasing bond length and decreasing bond strength: (a) Si-F, Si-C, Si-O; (b) N=N, N-N, N≡N
ChatGPT
(a) C≡C < C≡N < C≡O (increasing bond length); C≡O < C≡N < C≡C (increasing bond strength)
Explanation: In a series of molecules with the same central atom, the bond length decreases as the number of bonds between the central atom and the surrounding atoms increases. Therefore, in set (a), the C≡C bond is the shortest, followed by the C≡N bond, and then the C≡O bond. Similarly, the bond strength increases with the number of bonds between the central atom and the surrounding atoms. Therefore, the C≡C bond is the strongest, followed by the C≡N bond, and then the C≡O bond.
(b) P-F < P-Br < P-I (increasing bond length); P-I < P-Br < P-F (increasing bond strength)
Explanation: In a series of molecules with the same surrounding atom, the bond length increases as the central atom gets larger. Therefore, in set (b), the P-I bond is the longest, followed by the P-Br bond, and then the P-F bond. Similarly, the bond strength decreases as the central atom gets larger. Therefore, the P-I bond is the weakest, followed by the P-Br bond, and then the P-F bond.
(c) Si-O < Si-C < Si-F (decreasing bond length); Si-F < Si-C < Si-O (decreasing bond strength)
Explanation: In a series of molecules with the same central atom, the bond length increases as the electronegativity of the surrounding atom increases. Therefore, in set (c), the Si-F bond is the longest, followed by the Si-C bond, and then the Si-O bond. Similarly, the bond strength decreases as the electronegativity of the surrounding atom increases. Therefore, the Si-F bond is the weakest, followed by the Si-C bond, and then the Si-O bond.
(d) N≡N < N-N < N=N (decreasing bond length); N≡N > N-N > N=N (decreasing bond strength)
Explanation: In a series of molecules with the same central atom, the bond length decreases as the number of bonds between the central atom and the surrounding atoms increases. Therefore, in set (d), the N≡N bond is the shortest, followed by the N-N bond, and then the N=N bond. Similarly, the bond strength increases with the number of bonds between the central atom and the surrounding atoms. Therefore, the N≡N bond is the strongest, followed by the N-N bond, and then the N=N bond.
1.(a) In order of increasing bond length: C≡N, C≡C, C≡O and In order of increasing bond strength: C≡O, C≡C, C≡N and (b) In order of increasing bond length: P-F, P-Br, P-I and In order of increasing bond strength: P-I, P-Br, P-F. 2. (a) In order of decreasing bond length: Si-F, Si-O, Si-C and In order of decreasing bond strength: Si-O, Si-C, Si-F and (b) In order of decreasing bond length: N≡N, N=N, N-N and In order of decreasing bond strength: N≡N, N=N, N-N.
1. (a) This is because nitrogen is smaller than carbon, so the triple bond is shorter and stronger. Carbon-oxygen bonds are typically shorter and stronger than carbon-carbon bonds, so C≡O is shorter and stronger than C≡C. In order of increasing bond strength the order is P-I, P-Br, P-F because oxygen is more electronegative than carbon, so the carbon-oxygen bond is more polar and stronger.
(b) The bond length order is so because fluorine is smaller than bromine or iodine, so the bond is shorter and stronger. and the bond strength order is so because iodine is larger than fluorine or bromine, so the bond is weaker and longer.
2. (a) This is because fluorine is smaller than oxygen, so the bond is shorter and stronger. Oxygen is smaller than carbon, so the bond is shorter and stronger. In order of decreasing bond strength the order is Si-O, Si-C, Si-F because oxygen is more electronegative than carbon, so the carbon-oxygen bond is more polar and stronger. Fluorine is more electronegative than carbon, so the carbon-fluorine bond is more polar and stronger.
(b) The bond length order is so because the triple bond is shorter and stronger than the double bond, which is shorter and stronger than the single bond and the bond strength order is so because the triple bond is stronger than the double bond, which is stronger than the single bond.
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Karla is reading about a type of single-celled microorganism that can live inside the human body. This type of organism can either be harmful or harmless to people, depending on the type. One harmless type lives in the intestines and helps the body digest food. One harmful type can cause strep throat. Which type of organism is Karla most likely reading about?
A bacteria
B fungi
C parasites
D viruses
please help
Answer:
its bacteria
Explanation:
Single-celled organisms can directly take in nutrients from their outside ... Figure 1. The digestive systems of representative animals. Images from ... There are two types of animal body plans as well as two locations fordigestion to occur
Answer:
A bacteria
Explanation:
i did it LOL
The yellow light given off by a sodium vapor lamp has a wavelength of 589nm. What is the frequency of this radiation? Please show all work.
Answer:
5.09 x 10⁶ s⁻¹ = 5.09 x 10⁶ Hz
Explanation:
The relation between frequency (ν) and wavelength (λ) is given by:
λ = c/ν
where c is the speed of light (2.998 m/s) and it is a constant.
So, we first convert the wavelength from nanometers (nm) to meters (m) (1 nm = 1 x 10⁻⁹):
λ= 589 nm x (10⁻⁹ nm/1 m) = 5.89 x 10⁻⁷ m
Then, we calculate the frequency from the equation:
λ = c/ν ⇒ ν = c/λ = (2.998 m/s)/(5.89 x 10⁻⁷ m) = 5.09 x 10⁶s⁻¹ = 5.09 x 10⁶ Hz
please help!!! will give brainliest!!! 30 points! (need to put roman numeral in answer)
1. Nickel (II) Bromide
2. Iron (II) Oxide
3. Iron (III) Oxide
4. Tin (IV) Chloride
5. Lead (IV) tetrachloride
6. Tin (II) Bromide
7. Chromium (III) Phosphide
8. Iron (II) Fluoride
9. Gold (III) Chloride
I hope this helps. I'm more than 100% sure that all the answers except for number 7 are correct. I knew all of them off the top of my head except for this one. I hope the other answer has the correct answer for that one. Good luck and have a great day.
Which federal agency makes sure federal wildlife laws are followed?
US Forest Service
US Fish and Wildlife Service
Bureau of Land Management
National Park Service
Answer:
us fish and wildlife service
Explanation:
the 2nd choice
Answer:
US Fish and Wildlife Service
Write the formula and determine the percent by mass of the salt in barium hydroxide octahydrate *
(show work)
Answer:
315.51g/mol
Explanation:
137(33 + (16.00 + 1.01) 2 + 8 [1.01 (2) + 16.00] = 315.51g/mol
Name the element which has twice the number of electrons in its second shell as in the first shell write it's electronic configuration also.
1. Which word has the same phoneme as grew, rude, and truth?
A. thumb
B. sure
C. look
D. scoot
Answer:
B-Sorry if this isn't right :/ Good luck.
Explanation:
Answer:
D. Scoot
Explanation:
Grew, Rude and truth all have the sound /OO/ scoot follows that pattern.
Drag each label to the correct location.
We use specific words to describe each type of change in state. Label the arrows to describe the changes of state they
represent
gas
liquid
solid
melting freezing condensation
evaporation sublimation
deposition
name three layers of our skin
What is the symbol for Sodium?
Na
S
(iii) Observe the following diagram and answer the following questions :
X Х
Y
(A) Identify elements X and Y.
(B) Do these elements belong to the same group?
(C) Which element is more electropositive in nature? Why?
Which type of model is described below? A scientist thinks of the inside of a tree as being like a giant straw that can suck up water A. Atomic model B. Physical model C. Mathematical model D. Conceptual model
Answer:
B. Physical model
Explanation:
Out of the four of them this is the one that makes the most sense
For the rxn CaCo3(s)+2Hcl(aq)_CaCl(aq)+Ca2(g)+H2O(l)68.1 g solid CaCo3 is mixed with 51.6Hcl what number of grams of Co2 will be produced
Answer:
29.9 g of CO₂ will be produced by the reaction.
Explanation:
This is the reaction:
CaCO₃(s) + 2HCl (aq) → CaCl₂(aq) + CO₂(g) + H₂O(l)
First of all, we state the moles of each reactant:
68.1 g . 1mol/ 100.08g = 0.680 mol of carbonate
51.6 g . 1 mol/36.45g = 1.46 mol of acid.
The solid salt is the limiting reactant. Ratio is 2:1
2 moles of acid can react to 1 mol of salt
1.46 mol of acid may react with (1.46 . 1)/2 = 0.727 moles
As we only have 0.680 moles of salt, we do not have enough.
Let's work at the product side. Ratio is 1:1
1 mo of salt can produce 1 mol of gas
0.680 moles will produce 0.680 moles of gas
We convert the moles to mass → 0.680 mol . 44g / 1mol = 29.9 g of CO₂
The number of grams of Co2 should be produced is 29.9 g.
Calculation of the number of grams:Since
CaCO₃(s) + 2HCl (aq) → CaCl₂(aq) + CO₂(g) + H₂O(l)
So,
68.1 g . 1mol/ 100.08g = 0.680 mol of carbonate
51.6 g . 1 mol/36.45g = 1.46 mol of acid.
Now the ratio should be 2:1 for the solid salt
And, there is 2 moles of acid can react to 1 mol of salt
So,
1.46 mol of acid may react with (1.46 . 1)/2 = 0.727 moles
Now the product side the ratio is 1:1
So, that means
1 mo of salt can produce 1 mol of gas
So, the no of grams should be
= 0.680 mol . 44g / 1mol
= 29.9 g of CO₂
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What conclusion can be drawn from the fact that water can decompose into oxygen and hydrogen?
Answer:
hydrogen is collected at negative chose and oxygen is collected at positive anode. Hydrogen is double in volume than oxygen. 2H2O = 2H2 + O2.
Explanation:
and GAMER PHROG
The desert climate or arid climate, is a climate which there is an excess of evaporation over precipitation. During the days, the temperatures are very high and dry. During nightfall, temperatures drop dramatically and it gets very cold. In three to four sentences, describe one plant and one animal that you would expect to find in the arid biome. Support your answer with the abiotic factors in the biome. *
These desert dwelling, nocturnal creatures are very tough and low maintenance. Scorpions' exoskeletons and venomous stingers give them great protection, and their low food and water needs and ability to slow down their metabolism allow them to survive in the harshest environments.
calculate 28.1g of silicon to moles
Answer:
2.53•10^23 atoms
Explanation:
23 is the exponent btw
explain why dilute trioxosulphate vi acid is not used to prepare carbon 4 oxide from calcium
trioxocarbonate 4
Answer:
H2SO4 cannot be used with CaCO3 to produce CO2 gas
Explanation:
Because it does not dissolve in water- it forms a barrier on the surface of the unreacted CaCO3 which prevents any further reaction. A small volume CO2 is produced, this stops in short time.
I hope this helps :)
Which changes would cause an increase in the resistance of a wire? Check all that apply.
increasing its temperature
decreasing its temperature
using a longer wire
using a shorter wire
m using a thicker wire
using a thinner wire
Answer:
Increasing its temperature.
Longer
and thinner
Explanation:
e2021
The resistance of a wire increases by increasing its temperature, using a longer wire and using a thinner wire.
Resistivity of a wireThe resistivity of wire describes the opposition to the flow of current in the wire.
[tex]R = \frac{\rho L}{A} \\\\\rho = \frac{RA}{L} \ (ohm-meter)[/tex]
where;
R is the resistance (ohms)ρ is resistivity of the wire (ohm-meter)L is length of the wire (m)A is area of the wire (m²)From the formula above, the resistance of a wire increases with
increase in the length of the wiredecrease in thickness (radius) of the wireincrease in temperatureLearn more about resistance of a wire here: https://brainly.com/question/469388
Complete the sentence. Atoms form chemical bonds to satisfy the rule and to become Å Done Intro -
Answer:
Sorry
Explanation:
I m very sorry I don't know this
Describe the arrangement and motion of the particles in liquid stearic acid.
Answer:
Its density is exactly the same as that of pure stearic acid. Its boiling point is the same as that of pure stearic acid. Its melting point is different from pure stearic acid.
please help me out i will give you brainlist. 0.500 is wrong
============================================
Work Shown:
Using the periodic table, we see that
1 mole of carbon = 12 grams1 mole of oxygen = 16 gramsThese are approximations and these values are often found underneath the atomic symbol. For example, the atomic weight listed under carbon is roughly 12.011 grams. I'm rounding to 2 sig figs in those numbers listed above.
So 1 mole of CO2 is approximately 12+2*16 = 44 grams. The 2 is there since we have 2 oxygens attached to the carbon atom.
-------------------
Since 1 mole of CO2 is 44 grams, we can use that to convert from grams to moles.
11.0 grams of CO2 = (11.0 grams)*(1 mol/44 g) = (11.0/44) mol = 0.250 mol of CO2
In short,
11.0 grams of CO2 = 0.250 mol of CO2
This is approximate.
We don't need to use any of the information in the table.
Answer:
.250
Explanation:
O1S. Answer the following questions using Boyle's law:
a. A gas at 1.00 atm occupies 5.00 L. What would be the pres
sure with the volume at 10.0 L if the temperature remains
constant?
we have recent
Answer: 0.5 atm
Explanation:
you would want to use Boyles law which is P1P2=P2V2
or in this case, 1.00atm x 5.00L=P2 x 10.0L
1.00x5.00/10.00= 0.50atm
SCIENCE
Does combustion need oxygen?
A. Yes
B. No
Answer: a. Yes
Explanation:
Answer:
A. yes
Explanation:
In order to burn this fuel, oxygen is needed, as it is with any fire. The waste products from the combustion process are water and carbon dioxide. Thus, we breathe because oxygen is needed to burn the fuel (sugars and fatty acids) in our cells to produce energy The air we breathe contains about 21% oxygen.
Na on the periodic table is the symbol for what?
Answer:
sodium
Explanation:
Na is the symbol for sodium on the periodic table
Answer: Sodium is a chemical element with the symbol Na (from Latin "natrium") and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is 23 Na.
Explanation:
Thermal expansion occurs when particles of matter move farther apart as temperature increase. True or false ?
Answer:
true
Explanation:
No attempt was made to test sodium with hydrochloric
acid. Why not?
Answer:
the reaction is violent and quick
Explanation:
Al +CI = Al CI3
how do i solve this
changing the number of _______ makes an atom stable or unstable and creates different isotopes of the same element with a different ______ (pick two that best fits.)
a.) atomic mass
b.) atomic number
c.) protons
d.)neutrons
e.)electrons
f.) ion
g.)neutral
The neutrons are the neutral sub-atomic particles present in the nucleus. The variation in the number of neutrons produces isotopes that have different atomic mass. Thus, options 1. d and 2. a are correct.
What is an isotope?An isotope is said to be an atom of an element that have a different atomic mass but the same atomic number due to the variation in the neutrons in the nucleus. The neutrons have a neutral charge that makes the atom stable.
When a neutron is added or lost it makes the nucleus of the atom unstable leading to radioactive decay. The isotopes have the same constant number of protons in their nucleus.
The atomic number of the atom remains the same due to the stable proton number but varies the atomic mass due to the change in the number of neutrons.
Therefore, options d and a. neutrons and atomic mass are the correct blanks.
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how many molecules are there in 1.5 mol of methane
Answer: A mole of something means that there are 6.02 X 10^23 of that something. So, a mole of methane molecules is 6.02 X 10^23 methane molecules. So, 1.5 moles of methane will contain 1.5*(6.02 X 10^23) = 9.0 X 10^23 methane molecules
Explanation:
Plants absorb water in the soil through their roots and pump this water up to deliver
nutrients to their leaves. This pumping is driven by the evaporation of water through
small pores on the undersides of leaves. What is this process called?
A)germination
B)pollination
C)respiration
D)transpiration