Question

Three elements X, Y, Z have atomic number 4,13,18 . Identify the group and period to which these elements belong

Answer 1

Explanation:

X beryllium belongs to 2 period

Y Aluminium belongs to 3 period

Z Argon belongs to 3 period

Answer 2

Answer:

Your answer is in the picture..

Explanation:

I hope it will help you mate!