Question

electronic configaration of an element is 1s2 2s2 2p6 3s2 3p6 4s2 3d5 ,
predict the block,period and group.

Answer 1

Answer:

here given Z= 25 (as 2+2+6+2+6+2+5=25)

so, the element is Mn i.e. MANGANESE

since the electronic configuration has 3d subshell involved thus, it has entered D-BLOCK ELEMENTS.

PERIOD:- 4

GROUP:-7