1.

Three elements X, Y and Z belong to 17th group but 2nd, 3rd and 4th period respectively. Number of valence electrons in Y is 7. Find the number of valence electrons in X and Z.

Answer»

It will be 7 in X as well as in Z

The reason being that number of electrons in the outermost shell in the elements in same group is same.



Discussion

No Comment Found