Question

Write the electronic configuration of two elements X and Y. Whose atomic numbers 20 and 17 respectively. Write the molecular formula of the compound formed when element X react with element Y. Draw a electron structure of product and also state the nature of the band formed between both the elements?

Answer 1

I got electronic configuration. This may help u out

Answer 2

Hey dear,

● Answer -
Element X having atomic number 20 is Calcium (Ca).
Electronic configuration of Ca is
[Ca] => [Ar] 4s2.
Outer shell electron rich by 2 e-.

Element Y having atomic number 17 is Calcium (Cl).
Electronic configuration of Cl is
[Cl] => [Ne] 3s2 3p5.
Outer shell deficient by 1 e-.

Two atoms of Cl accept 1 e- each from Ca atom so that their electronic configuration becomes stable.
Ca => Ca2+ + 2e-
Cl + e- => Cl

Ca2+ and Cl- react together to form CaCl2.
Ca2+ + 2Cl- => CaCl2

The bond formed here is ionic bond.

Hope this helped you..