Question

An element x have mass-4 and atomic no. 2. write the valency of element. will it react with other atoms of different element.

Answer 1

hey mate here is your ans:-

atomic no. = 2

so, valency of x = 0

as electric configuration = K shell = 2 electrons

as the shell is completely filled therefore valency of x is 0

if this helped you then plz mark this ans as brainlist

Answer 2

hey mate ur ans

valency- 0
it will not react as it is noble gas