Question

In the formation of $Al{F}_3$, Aluminium atom has to lose ______ electrons.

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is C

$3$

Explanation for Correct option:

To attain the nearest inert gas, an Aluminium atom loses 3 electrons and each Fluorine atom gain 1 electron: aluminium has valency 3 and can form trivalent ions by losing electrons to fluorine atoms, which is highly electronegative in nature.

i.e.. Aluminium(Al) has $1s^{2}2s^{2}2p^{6}3s^{2}3p^1$ has $3$ valence electrons. In $Al{F}_3$, Al loses its $3$ valence electrons and forms $A{l}^{+3}$

Hence, the correction option is (C). Al loses $3$ valence electrons in $Al{F}_3$.