Question 1

The Lewis symbol for P³^- is:

Accepted Answer

The answer of The Lewis symbol for P³^- is: ...

Question 2

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 3

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

Accepted Answer

In the molecule OF₂, oxygen is bonded to a more electronegative fluorine atom, causing oxygen to have a partial positive charge. In option A, oxygen is bonded to sulfur which is less electronegative than oxygen, so oxygen has a partial negative charge. In option C, oxygen is not bonded to any more electronegative atom, so it does not have a partial positive charge. In option D, oxygen is bonded to magnesium, which is less electronegative than oxygen, so oxygen has a partial negative charge. Therefore, the correct answer is option B only.

Question 4

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 5

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

Accepted Answer

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

Question 6

The Lewis symbol for N is:

Accepted Answer

The answer of The Lewis symbol for N is: 
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Question 7

The Lewis symbol for C is:

Accepted Answer

The Lewis symbol for an element shows its valence electrons, which are the electrons in the outermost shell. The Lewis symbol for C has four valence electrons, which are represented by four dots around the symbol.

Question 8

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

Accepted Answer

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

Question 9

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 10

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 11

The Lewis symbol for Al³⁺ is:

Accepted Answer

The answer of The Lewis symbol for Al³⁺ 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 O²^-is:

Accepted Answer

The answer of The Lewis symbol for O²^-is: ...

Question 14

The Lewis symbol for S is:

Accepted Answer

The answer of The Lewis symbol for S is: 
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Question 15

Which of the following molecules contains the most polar bonds?

Accepted Answer

The answer of Which of the following molecules contains the...

Question 16

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

Accepted Answer

As you go from left to right across a period of the periodic table, electronegativity generally increases. Therefore, As (arsenic) will have the lowest electronegativity. Between O (oxygen) and S (sulfur), O will have the higher electronegativity as it is located higher up in the same group/family as S. Therefore, the correct order of increasing electronegativity is As < S < O. F (fluorine) has the highest electronegativity and is not included in this order. Thus, the best choice is C (As < S < O < F).

Question 17

The Lewis symbol for F is:

Accepted Answer

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

The Lewis symbol for Mg is:

Accepted Answer

The answer of The Lewis symbol for Mg is: 
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Question 19

The Lewis symbol for Ba²⁺ is:

Accepted Answer

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

Question 20

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.

Quiz 8: Chemical Bonding

The Lewis symbol for P³^- is:

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

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

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

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

The Lewis symbol for N is:

The Lewis symbol for C is:

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

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

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

The Lewis symbol for Al³⁺ is:

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

The Lewis symbol for O²^-is:

The Lewis symbol for S is:

Which of the following molecules contains the most polar bonds?

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

The Lewis symbol for F is:

The Lewis symbol for Mg is:

The Lewis symbol for Ba²⁺ is:

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

Quiz 8: Chemical Bonding

The Lewis symbol for P3- is:

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

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

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

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

The Lewis symbol for N is:

The Lewis symbol for C is:

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

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

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

The Lewis symbol for Al3+ is:

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

The Lewis symbol for O2- is:

The Lewis symbol for S is:

Which of the following molecules contains the most polar bonds?

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

The Lewis symbol for F is:

The Lewis symbol for Mg is:

The Lewis symbol for Ba2+ is:

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

The Lewis symbol for P³^- is:

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

The Lewis symbol for Al³⁺ is:

The Lewis symbol for O²^-is:

The Lewis symbol for Ba²⁺ is: