What is the valency of boron?

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Solution

Valency
The valency of an atom refers to its ability to combine with other atoms.
The valency of an element determines the number of bonds that an atom can make as part of a complex.
The electrons in the atom's outermost orbit are referred to as valence electrons.
Valency of boron
Boron has an atomic number of $5$ .
Boron has total $3$ valence electrons.
It will lose $3$ electrons rather than gain $5$ electrons to complete its octet.
As a result, the valency of boron is $3$ .
The outer shell has three electrons, which is less than five, it must release or donate these electrons to maintain stability, according to the octet rule: two electrons in the K shell; three electrons in the L shell.

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{B F}_{3}

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