Question

Consider the following statements. 

(i) d-block elements composed of 3d series, Sc to Zn (4^th period). 

(ii) 4d series composed of Y to Cd.

(iii) 5d series composed of La, Hf to Mercury. 

Which of the above statements is/are incorrect 

(a) (i) and (iv) 

(b) (i), (ii) and (iii) 

(c) (iii) and (iv) 

(d) (iv) only

(iv) d-block elements composed of 4d series Y to Cd.

Answer 1

(b) (i), (ii) and (iii)