Question

Among the following elements how many of them are inner transition elements ?
(a) `Sg` , (b) `Bk`, (c ) `Er` , (d) `Em`
(e) `Fe` , (f) `Pb` , (g) `Cr` , (h) `Ca`
(i) `Ar` , (j) `Zr` , (k) `Ce`

Answer 1

Correct Answer - 4
Inner transition elements are `Bk, Er, Fm , Ce` .
Transition elements are `Sg, Fe, Cr, Zr`.
p-block elements are `Pb` and `Ar`.
s-block element is `Ca`.