Question

Why is HCl, being a covalent compound, made by using the crisscross method of valency?

Answer 1

Explanation:

Now bonds are formed when two atoms share their electron density. Covalent bonds are formed when the participating atoms share half of their combined electron density. So the true covalent bond forms only in homo-nuclear atoms like Cl-Cl or H-H.

The purity of covalency (i.e. the equal sharing of electron density) is diminished when the molecule is hetero-nuclear. If one atom is more electronegative than the other, the atom attracts the pair towards itself thus violating the 'covalency' of the bond. Now the 'covalent' bond is now polar covalent bond. So more the polarity of the bond, more ionic it is and less covalent

Answer 2

Why is HCl, being a covalent compound, made by using the crisscross method of valency?

AnsweR:

HCl is a covalent compound. Because, both the atoms share the electrons.

Reason:

Because of the size difference of atoms, Hydrogen is unable to act like a cation, until it disassociates.

Hope it will be helpful :)...✍️

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