The electronic configuration of four elements is as follows
X: `1s^2 2s^2 2p^4` , Z [Ne] `3s^1` Y:[Ne] `3s^2 3p^5` , W: [Ne] `3s^2`
Which of the following set containscorrect formulae of X. Y, Z. W

Options

A. `X_2Z`, WX, WY, ZY
B. `Z_2X`, WX, ZY, `WY_2`
C. `W_2Y`, WX. ZY, ZX
D. XY. YZ, ZX `W_2X`

Answer

B

Explanation

The number of valence electrons, X(6), Z(1). Y(7) and W(2). Thus, the compounds formed between Z and X is `Z_2X` , between W and X is WX, between Y and Z is ZY and between W and Y is `W_2Y`, `Z_2X` and ZY being ionic while `W_2Y `and WX are covalent.