The number of valence electrons in the valece shells , 1 , 2 , 3 of the X , Y , Z elements are 2 , 8 , 6 respectively . Identify the element which doesn ' t exist monoatomic state.

Options

A. X
B. Z
C. Y
D. X and Y

Answer

2

Explanation

`{:(" Element",X,Y,Z),("Valence shell",underset((1))(K),underset((2))(L),underset((3))(M)):}`
No . Of valence
`{:("Electrons",2,8,6),("Element","He","Ne","S"):}`
Sulphur doesn ' t exist in monoatomic state due to its greater chemical reactively.