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4. Assign an oxidation state to the element whose atom is underlined in the following compound: AIH3

O Al: +5
O Al: -5
Ο Ο Ο
Al: -3
O Al: +3

User Jrath
by
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1 Answer

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Answer: The oxidation state of Al in
AlH_(3) is +3.

Step-by-step explanation:

The number attained by an atom or substance due to loss or gain of electrons is called oxidation state.

For example, in
AlH_(3) it is known that the oxidation state of hydrogen is -1 as aluminum is a cation so it cannot have an oxidation state as 'minus'.

Whereas hydrogen has the property to act both as a cation and an anion.

Let us assume the oxidation state of Al is x in the compound
AlH_(3).

Hence, oxidation state of Al is calculated as follows.


x + 3(-1) = 0\\x - 3 = 0\\x = +3

This means that the oxidation state of Al in
AlH_(3) is +3.

Thus, we can conclude that oxidation state of Al in
AlH_(3) is +3.

User Emmanuel Sio
by
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