AP EAPCET 19-Aug-2021 Shift 1 Paper

For electronic configuration =[Ar]3d54s2
Group = number of valence electrons ‌‌‌‌‌‌ (∴ electrons in d and s-orbital)
Electrons in d-orbital =5
and electrons in s-orbital =2
Group =5+2=7
[Ar]3d54s2=18+5+2=25 ‌‌‌‌‌‌ [For Mn (Manganese) group number =7]