1.

The first ionization potentials of Na, Mg, Al and Si are in the order?

A. Na u003c Mg u003e Al u003c Si
B. Na u003c Mg u003c Al u003e Si
C. Na u003e Mg u003e Al u003e Si
D. Na u003e Mg u003e Al u003c Si
Answer» B. Na u003c Mg u003c Al u003e Si


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