Question

[Ar] 3d5 4s2 is the sub shell electronic configuration of an element.
a)write the complete sub shell electronic configuration of this element
b)name the block to which this element belong​

Answer 1

Answer:

a)$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 3d^{5}$

b) d-block (transition elements)