Given below are two statements : Statement I : The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of Mg. Statement II : The ionic radius of O 2– is larger than t

Question

Given below are two statements : Statement I : The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of Mg. Statement II : The ionic radius of O 2– is larger than that of F –. In the light of the above statements, choose the correct answer from the options given below.

(A) Both statement I and statement II are true
(B) Both statement I and statement II are false
(C) Statement I is false but statement II is true
(D) Statement I is true but statement II is false

Prashant Kotian · Accepted Answer

Correct answer: A. Na+ :- 1s 2 2s 2 2p 6 (fully filled electronic configuration) Mg + :- 1s 2 2s 2 2p 6 3s IE2 of Na > IE2 of Mg Size of O 2– > F –

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