Question

The internuclear distances in $$O – O$$  bonds for $$O_2^ + ,{O_2},O_2^ - $$   and $$O_2^{2 - }$$  respectively are :

A. $$1.30\,\mathop {\text{A}}\limits^{\text{o}} ,1.49\mathop {\text{A}}\limits^{\text{o}} ,1.12\mathop {\text{A}}\limits^{\text{o}} ,1.21\mathop {\text{A}}\limits^{\text{o}} $$
B. $$1.49\mathop {\text{A}}\limits^{\text{o}} ,1.21\mathop {\text{A}}\limits^{\text{o}} ,1.12\mathop {\text{A}}\limits^{\text{o}} ,1.30\mathop {\text{A}}\limits^{\text{o}} $$
C. $$1.21\mathop {\text{A}}\limits^{\text{o}} ,1.12\mathop {\text{A}}\limits^{\text{o}} ,1.49\mathop {\text{A}}\limits^{\text{o}} ,1.30\mathop {\text{A}}\limits^{\text{o}} $$
D. $$1.12\mathop {\text{A}}\limits^{\text{o}} ,1.21\mathop {\text{A}}\limits^{\text{o}} ,1.30\mathop {\text{A}}\limits^{\text{o}} ,1.49\mathop {\text{A}}\limits^{\text{o}} $$  
Answer :   $$1.12\mathop {\text{A}}\limits^{\text{o}} ,1.21\mathop {\text{A}}\limits^{\text{o}} ,1.30\mathop {\text{A}}\limits^{\text{o}} ,1.49\mathop {\text{A}}\limits^{\text{o}} $$
Solution :
The bond length follows the order
$$O_2^ + < {O_2} < O_2^ - < O_2^{2 - }$$
According to this the possible values are
$$1.12\mathop {\text{A}}\limits^{\text{o}} ,1.21\mathop {\text{A}}\limits^{\text{o}} ,1.30\mathop {\text{A}}\limits^{\text{o}} ,1.49\mathop {\text{A}}\limits^{\text{o}} $$

Releted MCQ Question on
Inorganic Chemistry >> Chemical Bonding and Molecular Structure

Releted Question 1

The compound which contains both ionic and covalent bonds is

A. $$C{H_4}$$
B. $${H_2}$$
C. $$KCN$$
D. $$KCl$$
Releted Question 2

The octet rule is not valid for the molecule

A. $$C{O_2}$$
B. $${H_2}O$$
C. $${O_2}$$
D. $$CO$$
Releted Question 3

Element $$X$$ is strongly electropositive and element $$Y$$ is strongly electronegative. Both are univalent. The compound formed would be

A. $${X^ + }{Y^ - }$$
B. $${X^ - }{Y^{ + \,}}$$
C. $$X - Y$$
D. $$X \to Y$$
Releted Question 4

Which of the following compounds are covalent?

A. $${H_2}$$
B. $$CaO$$
C. $$KCl$$
D. $$N{a_2}S$$

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Chemical Bonding and Molecular Structure


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