Evaluate the following statements related to group 14 elements fo… - Vidyadip

MCQ

Evaluate the following statements related to group $14$ elements for their correctness.

$(A)$Covalent radius decreases down the group from $\mathrm{C}$ to $\mathrm{Pb}$ in a regular manner.

$(B)$ Electronegativity decreases from $\mathrm{C}$ to $\mathrm{Pb}$ down the group gradually.

$(C)$ Maximum covalence of $\mathrm{C}$ is $4$ whereas other elements can expand their covalence due to presence of $d$ orbitals.

$(D)$ Heavier elements do not form $\mathrm{p} \pi-p \pi$ bonds.

$(E)$ Carbon can exhibit negative oxidation states.

Choose the correct answer from the options given below:

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

✓

Answer

Correct option: A.

$(C), (D)$ and $(E)$ Only

a
$(A)$ Down the group; radius increases

$(B)$ EN does not decrease gradually from $\mathrm{C}$ to $\mathrm{Pb}$.

$(C)$ Correct.

$(D)$ Correct.

$(E)$ Range of oxidation state of carbon ; $-4$ to $+4$

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