Question

Question #4b7e9

Answer 1

Technically, yes.

Explanation:

Valency is a concept that is defined by the power of atom/s to combine with other atoms to form a substance or compound.

Electrovalency is the transfer of electrons from one atom to the other.

For example, carbon has 4 valence electrons which means it can, at most, form 4 single bonds with 4 other atoms (e.g. `CH_4`). This is valency.

On the other hand, in the molecule `NaF`, the Na atom willingly gives up its one electron to make the `Na^+` ion, which the fluorine atom willingly accepts to make the `F^-` ion. They both do this in their bid to mimic the electron configuration of the nearest noble gas. This is electrovalency.

`Na^o`: `1s^2` `2s^2` `2p^6` `3s^1`
`Na^+`: `1s^2` `2s^2` `2p^6` = same as `Ne` (atomic number 10)

`F^o`: `1s^2` `2s^2` `2p^5`
`F^-`: `1s^2` `2s^2` `2p^6` = same as `Ne` (atomic number 10)