Problem: Of the following elements, which has the largest first ionization energy?A) NaB) AlC) SeD) ClE) Br

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Ionization energy is the energy required to remove an electron from a gaseous atom or ion.

The trend of the ionization energies of the elements can be observed in the periodic table:

increases going from left to right of a period


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Problem Details

Of the following elements, which has the largest first ionization energy?

A) Na

B) Al

C) Se

D) Cl

E) Br

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