Problem: Comparing the ionization energies of chlorine, selenium and sulfur,a. S  > Se and S = Cl.b. S  > Se and S > Cl.c. S  < Se and S < Cl.d. S  > Se and S < Cl.e. S < Se and S = Cl.

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Establish the ionization energy trend and rank the given elements to increasing IE

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

Comparing the ionization energies of chlorine, selenium and sulfur,

a. S  > Se and S = Cl.

b. S  > Se and S > Cl.

c. S  < Se and S < Cl.

d. S  > Se and S < Cl.

e. S < Se and S = Cl.

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