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Correct order of first ionization energy...

Correct order of first ionization energy of the following metals Na, Mg, Al, Si in `KJ mol^(–1)` respectively are:

A

786, 739, 577, 497

B

497, 577, 737, 786

C

497, 737, 577, 786

D

739, 577, 786, 487

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The correct Answer is:
B
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