Question 1

Arrange the following bonds in order of increasing polarity: Cl-S, Cl-P, Cl-Si, Cl-Cl

Accepted Answer

The polarity of a bond depends on the difference in electronegativity between the two atoms. Cl-Cl is nonpolar as it is between identical atoms. Cl-S has a small electronegativity difference, followed by Cl-P, and Cl-Si has the largest difference, making it the most polar.

Question 2

The Lewis symbol for Mg is:

Accepted Answer

The answer of The Lewis symbol for Mg is: 
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Question 3

Arrange the following bonds in order of increasing polarity: C-O, C-C, C-N, C-F

Accepted Answer

The answer of Arrange the following bonds in order of...

Question 4

The Lewis symbol for S is:

Accepted Answer

The answer of The Lewis symbol for S is: 
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Question 5

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Se, Cl, Mg, Na

Accepted Answer

Electronegativity increases across a period from left to right and decreases down a group in the periodic table. Therefore, among the given elements, sodium (Na) and magnesium (Mg) are metals with lower electronegativities compared to selenium (Se) and chlorine (Cl), which are nonmetals. Na and Mg are in the same period with Na being to the left of Mg, so Na < Mg. Se and Cl are also in the same period with Se to the left of Cl, so Se < Cl. Between the metals and nonmetals, metals (Na and Mg) have lower electronegativities than nonmetals (Se and Cl), leading to the order: Na < Mg < Se < Cl.

Question 6

The Lewis symbol for C is:

Accepted Answer

The Lewis symbol for an element represents the element's valence electrons, which are the electrons in the outermost energy level. The Lewis symbol for carbon (C) is simply the letter "C" with four dots around it, representing its four valence electrons. Therefore, the correct choice is C.

Question 7

The Lewis symbol for Ba²⁺ is:

Accepted Answer

The answer of The Lewis symbol for Ba²⁺ is: ...

Question 8

Which of the following molecules contains the most polar bonds?

Accepted Answer

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Question 9

Arrange the following bonds in order of increasing polarity: O-H, C-H, F-H, H-H

Accepted Answer

Polarity of a bond is determined by the difference in electronegativity between the two atoms. H-H has no difference, making it the least polar. C-H is next, as carbon and hydrogen have a relatively small difference. O-H and F-H are more polar due to the larger electronegativity differences, with F-H being the most polar because fluorine is the most electronegative element.

Question 10

In which of the following molecules does oxygen have a partial positive charge (δ+)?

Accepted Answer

In OF2, oxygen is less electronegative than fluorine, so it has a partial positive charge.

Question 11

The Lewis symbol for O^2- is:

Accepted Answer

The answer of The Lewis symbol for O^2- is: ...

Question 12

Arrange the following bonds in order of increasing polarity: H-Cl, H-I, H-Br, H-F

Accepted Answer

Polarity of a bond is determined by the difference in electronegativity between the two atoms. Fluorine is the most electronegative element, followed by chlorine, bromine, and then iodine. Therefore, H-F has the greatest polarity, and H-I has the least.

Question 13

The Lewis symbol for P^3- is:

Accepted Answer

The answer of The Lewis symbol for P^3- is: ...

Question 14

The Lewis symbol for Al³⁺ is:

Accepted Answer

The answer of The Lewis symbol for Al³⁺ is: ...

Question 15

Arrange the following bonds in order of increasing polarity: F-F, F-C, F-O, F-N

Accepted Answer

The answer of Arrange the following bonds in order of...

Question 16

Using periodic trends, arrange the following atoms in order of increasing electronegativity: F, O, S, As

Accepted Answer

Electronegativity generally increases across a period (from left to right) and decreases down a group (from top to bottom) on the periodic table. As is located in the 5th period and 15th group, S is in the 3rd period and 16th group, O is in the 2nd period and 16th group, and F is in the 2nd period and 17th group. Therefore, the order of increasing electronegativity is As < S < O < F.

Question 17

The Lewis symbol for N is:

Accepted Answer

The answer of The Lewis symbol for N is: 
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Question 18

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Cl, Si, Ga, Sr

Accepted Answer

Electronegativity increases across a period from left to right and decreases down a group in the periodic table. Therefore, Sr (being in the second column from the left and towards the bottom of the periodic table) has the lowest electronegativity, followed by Ga, then Si, and Cl has the highest electronegativity among them.

Question 19

Using periodic trends, arrange the following atoms in order of increasing electronegativity: S, Sr, P, Cs

Accepted Answer

Electronegativity increases across a period from left to right and decreases down a group in the periodic table. Cs and Sr are in the same group with Cs being lower than Sr, hence Cs is less electronegative. S and P are in the same period with P being to the left of S, making S more electronegative than P. Therefore, the correct order from least to most electronegative is Cs < Sr < P < S.

Question 20

The Lewis symbol for F is:

Accepted Answer

The answer of The Lewis symbol for F is: 
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Quiz 8: Chemical Bonding

Arrange the following bonds in order of increasing polarity: Cl-S, Cl-P, Cl-Si, Cl-Cl

The Lewis symbol for Mg is:

Arrange the following bonds in order of increasing polarity: C-O, C-C, C-N, C-F

The Lewis symbol for S is:

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Se, Cl, Mg, Na

The Lewis symbol for C is:

The Lewis symbol for Ba²⁺ is:

Which of the following molecules contains the most polar bonds?

Arrange the following bonds in order of increasing polarity: O-H, C-H, F-H, H-H

In which of the following molecules does oxygen have a partial positive charge (δ+) ?

The Lewis symbol for O^2- is:

Arrange the following bonds in order of increasing polarity: H-Cl, H-I, H-Br, H-F

The Lewis symbol for P^3- is:

The Lewis symbol for Al³⁺ is:

Arrange the following bonds in order of increasing polarity: F-F, F-C, F-O, F-N

Using periodic trends, arrange the following atoms in order of increasing electronegativity: F, O, S, As

The Lewis symbol for N is:

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Cl, Si, Ga, Sr

Using periodic trends, arrange the following atoms in order of increasing electronegativity: S, Sr, P, Cs

The Lewis symbol for F is:

Quiz 8: Chemical Bonding

Arrange the following bonds in order of increasing polarity: Cl-S, Cl-P, Cl-Si, Cl-Cl

The Lewis symbol for Mg is:

Arrange the following bonds in order of increasing polarity: C-O, C-C, C-N, C-F

The Lewis symbol for S is:

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Se, Cl, Mg, Na

The Lewis symbol for C is:

The Lewis symbol for Ba2+ is:

Which of the following molecules contains the most polar bonds?

Arrange the following bonds in order of increasing polarity: O-H, C-H, F-H, H-H

In which of the following molecules does oxygen have a partial positive charge (δ+) ?

The Lewis symbol for O2- is:

Arrange the following bonds in order of increasing polarity: H-Cl, H-I, H-Br, H-F

The Lewis symbol for P3- is:

The Lewis symbol for Al3+ is:

Arrange the following bonds in order of increasing polarity: F-F, F-C, F-O, F-N

Using periodic trends, arrange the following atoms in order of increasing electronegativity: F, O, S, As

The Lewis symbol for N is:

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Cl, Si, Ga, Sr

Using periodic trends, arrange the following atoms in order of increasing electronegativity: S, Sr, P, Cs

The Lewis symbol for F is:

The Lewis symbol for Ba²⁺ is:

The Lewis symbol for O^2- is:

The Lewis symbol for P^3- is:

The Lewis symbol for Al³⁺ is: