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Question

The electronegativity of H, X and O are 2.1, 0.8 and 3.5 respectively on Pauling scale. The nature of compound HOX is:

A
Acidic
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B
Basic
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C
Neutral
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D
Amphoteric
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Solution

The correct option is B Basic
Polarity of the bond depends upon the electronegativity difference of the bonded atoms and more is the electronegativity difference more is the tendency for heterolytic cleavage of the bond.
Electronegativity difference between O and H=3.52.1=1.4
Electronegativity difference between O and X=3.50.8=2.7

Therefore, electronegativity difference of OX is greater than OH
HOXHO+X+
As OH ion is released, so it is basic in nature.

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