Engineer & Medical

Chemical Bonding and Mole question bank (Chemistry)

Practice 1,998 free Engineer & Medical Chemistry - Chemical Bonding and Mole questions with answers and step-by-step solutions.

Q1.

The pairs among $A = [\text{SO}_3^{2-}, \text{CO}_3^{2-}]$, $B = [\text{O}_2^{2-}, \text{F}_2]$, $C = [\text{CN}^-, \text{CO}]$, $D = [\text{NH}_3, \text{H}_3\text{O}^+]$ and $E = [\text{MnO}_4^{2-}, \text{CrO}_4^{2-}]$ that do not have similar Lewis dot structure are

(A)
A, B and E
(B)
A and E
(C)
B, C and D
(D)
C and D
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Q2.

Which statements are NOT TRUE about $\mathrm{XeO}_{2} \mathrm{~F}_{2}$ ?
A. It has a see-saw shape.
B. Xe has 5 electron pairs in its valence shell in $\mathrm{XeO}_{2} \mathrm{~F}_{2}$.
C. The $\mathrm{O}-\mathrm{Xe}-\mathrm{O}$ bond angle is close to $180^{\circ}$.
D. The $\mathrm{F}-\mathrm{Xe}-\mathrm{F}$ bond angle is close to $180^{\circ}$.
E. Xe has 16 valence electrons in $\mathrm{XeO}_{2} \mathrm{~F}_{2}$.
Choose the correct answer from the options given below:

(A)
B, C and E Only
(B)
B and D Only
(C)
A and D Only
(D)
B, D and E Only
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