Q.

Statement-I: Noble gases are least reactive.

Statement-2: They have high ionisation enthalpy and more positive electron gain enthalpy.

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a

Statement-! is False, Statement-2 is True.

b

Statement-1 is True, Statement-Z is True, Statement-2 
is NOT a correct explanation for Statement-1

c

Statement-I is True, Statement--2 is True; Statement--2 
is a correct explanation for Statement-1. 

d

Statement-1 is True, Statement-2 is False.

answer is A.

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Detailed Solution

Because they have a high ionisation enthalpy and a higher positive electron enthalpy, noble gases are the least reactive.

Hence, Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1

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