Question

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

(A) Covalent radius decreases down the group from C to Pb in a regular manner. 

(B) Electronegativity decreases from C to Pb down the group gradually. 

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

(D) Heavier elements do not form \(p\pi-p\pi\) bonds. (E) Carbon can exhibit negative oxidation states. 

Choose the correct answer from the options given below: 

(1) (C), (D) and (E) Only 

(2) (A) and (B) Only 

(3) (A), (B) and (C) Only 

(4) (C) and (D) Only

Answer 1

Correct option is (1) (C), (D) and (E) Only 

(A) Down the group; radius increases 

(B) EN does not decrease gradually from C to Pb. 

(C) Correct. 

(D) Correct. 

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