Question

An element with configuration 2,8,1 belongs which group of element

Answer 1

Answer:

Element T has electronic configuration 2, 8, 8, 1 : this means 1s² 2s² 2p² 3s² 3p⁶ 4s¹ Since the number of electrons in the outer most shell (n = 4) is 1, it belongs to group 1. Its outermost shell number is 4.

Tellurium: T