1.

Correct increasing order of first ionistion potential is [UPSEAT 2003]

A. \[Na<Mg>Al<Si\]
B. \[Na<Mg<Al<Si\]
C. \[Na>Mg>Al>Si\]
D.   \[Na<Mg<Al>Si\]
Answer» B. \[Na<Mg<Al<Si\]


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