The electronic configuration of d-block element is 1s2,2s22p6,3s23p63d6,4s2.
The electronic configuration of Halogen is 1s2,2s22p5.
The electronic configuration of Alkali metal is 1s2,2s22p6,3s23p6,4s1.
The electronic configuration of Noble gas is 1s2,2s22p6,3s23p6.