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Assertion : H2Se is less acidic than H2S. 

Reason : S is less electronegative than Se.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

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2 Answers

How is H2SE less acidic than H2S??
Acidic strength increases down the group isn't it?

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The correct option is (c) A is true but R is false.

Explanation:

S is more electronegative than Se.

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