Question

an element X belongs to 3rd period and second group of modern periodic table. write the electronic configuration. write the formula of the compound it forms with S. Write the formula of the compound X reacts with Y of electronic configuration 2,6.

Answer 1

Answer:

electronic configuration is 2,8,2

X2S

XY

Answer 2

Explanation:

element x= Magnesium

atomic no. = 12

electronic configuration= 2,8,2

formula when react with s = MgS

element y= oxygen formula

when react with oxygen or y = MgO or xy