Question

The element Helium has three electrons in its valence shell but its valency is not 2,
explain?​

Answer 1

Answer:

becoz it is present in 2a group

Answer 2

Helium atom has only one shell (K shell) which can have maximum 2 electrons. Thus, its shell is already complete called duplet. It can neither lose electrons nor gain electrons. Hence, its valency is 'zero'.

Hope it helps you

Mark me brainlest