Question

The group of molecules having identical shape is :

A. $$PC{l_5},I{F_5},Xe{O_2}{F_2}$$
B. $$B{F_3},PC{l_3},Xe{O_3}$$
C. $$S{F_4},Xe{F_4},CC{l_4}$$
D. $$Cl{F_4},XeO{F_2},XeF_3^ + $$  
Answer :   $$Cl{F_4},XeO{F_2},XeF_3^ + $$
Solution :
$$\eqalign{ & Cl{F_3} \to {\text{Hybridisation}} \cr & = 3 + \frac{1}{2}\left[ {7 - 3} \right] = 5\left( {s{p^3}d} \right) \cr & XeO{F_2} \to {\text{Hybridisation}} \cr & = 3 + \frac{1}{2}\left[ {8 - 4} \right] = 5\left( {s{p^3}d} \right) \cr & XeF_3^ + \to {\text{Hybridisation}} \cr & = 3 + \frac{1}{2}\left[ {8 - 3 - 1} \right] \cr & = 5\left( {s{p^3}d} \right) \cr} $$
All molecules have $$s{p^3}d$$  hybridization and 2 lone pairs. Hence all have identical ( $$T$$ - shape).

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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