Two elements X and Y have atomic numbers 12 and 16 respectively

Two elements X and Y have atomic numbers 12 and 16 respectively. To which period of the modern periodic table do these two elements belong? What type of bond will be formed between them and why? Also give the chemical formula of the compound formed.

Answer

Electronic configuration of X: 2,8,2, Y: 2,8,6

Both X and Y belong to 3rd period.

Ionic bond will be formed.

Reason: X will lose 2 electrons and Y will gain 2 electrons to complete their octet and become stable.

Formula is XY.