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31 August, 06:02

Why is the first ionization energy of a nonmetal much higher than that of an alkali metal

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  1. 31 August, 09:28
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    -Nonmetals have more filled shells, making it harder to remove electrons.

    -Nonmetals have smaller atoms, while metals have larger atoms and therefore less attraction of the electrons to the nucleus. The nuclear charge increases from left to right across a period and the shielding effect stays the same. So it is more difficult to remove an electron from a nonmetal than an alkali metal
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