Question

write the formula of the ionic compound where both the cation and the anion possess helium like electronic configuration?​

Answer 1

Answer:

Your answer is (He) 2s^1

Answer 2

The ionic compound where both the cation and the anion possess helium-like electronic configuration is Lithium Hydride (LiH).

• Electronic configuration represents the distribution of electrons in different shells inside an atom.
• The electronic configuration of Helium (He) (Z=2) = 1s².
• The ionic compound LiH is formed of Li⁺ cations and H⁻ anions.

• Electronic configuration of Li :

     Z= 3, so configuration = 1s² 2s¹

     Li⁺ has only 2 electrons in its atom so its configuration =1s² i.e. same as       Helium.

• Similarly, the configuration of H:

     Z=1 , so configuration = 1s¹

     H⁻ has one extra electron in its shell so its configuration =1s² i.e. same as Helium.