Question

two elements X and I belong to the group 1 and 2 respectively in the same Period of the periodic table compare the elements with respect to
a) number of electrons in the outermost orbit
b)their valences
c)metallic character
d)the atomic size
e)formula of the chloride
f)formula of their sulphide

Answer 1

(a ) the number of shells in the outer most shell
are X=1 Y=2
b X=1 Y =2
c X is havingore metallic character than Y
d Y is having less size than X
e cl-
f. s2-

Answer 2

Answer: Please refer the attachment below :)