Question

The hybrid state of carbon in ethyne, graphite and diamond are respectively

A. $$s{p^2},sp,s{p^3}$$
B. $$sp,s{p^2},s{p^3}$$  
C. $$s{p^3},s{p^2},sp$$
D. $$s{p^2},s{p^3},sp$$
Answer :   $$sp,s{p^2},s{p^3}$$
Solution :
In ethyne, $$H - C \equiv C - H;C$$     is $$sp$$  hybridised.
In graphite, one $$C$$ atom is attached to 3 other $$C$$ atoms which is $$s{p^2}$$ hybridised.
In diamond, one $$C$$ atom is attached to 4 other $$C$$ atoms which is $$s{p^3}$$  hybridised.

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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