Question

electrovalency of Al in Al2O3 compound is?​

Answer 1

Answer:

charge of Al = +3

charge of O = -2

valency of Al in Al2O3 is 3

valency of O in Al2O3 is 2

Answer 2

The electro valency of Al in $Al_{2}O_{3}$ is 3

• Electro valency can be defined as the number of electrons present in the atom that are either gained or lost by the atom itself of any element that happens while forming an electrovalent bond of any compound.
• Any element in the compound that loses or give up its electrons and as a result form a positive ions due to which they get a positive valency as of Al in $Al_{2} O_{3}$.
• Any element in the compound that gains or accept electrons and as a result forms a negative ions due to which they get a negative valency as of Oxygen in $Al_{2} O_{3}$.
• From the given formula, it is clearly visible that the oxygen is a divalent with a valency of -2.
• Let the valency of Al is $x$

• So, $x$ × $2 + (-2)$ × $3 = 0$

• $2x - 6 = 0$
• $2x = 6$
• $x = \frac{6}{2} = 3$

Hence, the valency of Al in $Al_{2} O_{3}$ is 3.