Question

The size of zirconium (At. no.= 40). present in 2nd transition series elements is same with which of
the element of 3rd transition element.
(1) Hf (At. no.= 72) (2) Ta (At. no.= 73). (3) W (At. no.= 74). (4) Lu (At. no.= 71)​

Answer 1

Answer:

1 option is correct answer