First slide

Atomic and physical properties

Question

The element that exhibits negative oxidation state in IIIA group is

Easy

A

B
B

Al
C

Ga
D

Tl

Solution

"B" is the element that exhibits negative oxidation state in III_A group.
Eg,Magnesium boride MgB₂
In MgB₂the oxidation state of boron is -1
The negative oxidation state of boron is due to ,
I) Its small size
II) And its high electronegativity.

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