A brief information about elements W, X, Y and Z is given below : W :

1.	A brief information about elements W, X, Y and Z is given below : W : lt has two electron shells both of which are completely filled. X : lt has three electron shells in total and there are four electrons in the valence shell. Y : lt has three electron shells in total and first and third shell have two electrons each. Z : lt has twice as many electrons in its second shell as in its first shell and second shell is the valence shell.ldentify W, X, Y and Z.
Answer» Correct option (C) Explanation: Ne : 2, 8 Si :2,8,4 Mg : 2,8, 2 C : 2,4

A brief information about elements W, X, Y and Z is given below : W : lt has two electron shells both of which are completely filled. X : lt has three electron shells in total and there are four electrons in the valence shell. Y : lt has three electron shells in total and first and third shell have two electrons each. Z : lt has twice as many electrons in its second shell as in its first shell and second shell is the valence shell.ldentify W, X, Y and Z.

Answer»

Correct option (C)

Explanation:

Ne : 2, 8 Si :2,8,4 Mg : 2,8, 2 C : 2,4