Establish the ionization energy trend and determine which among the pairs of atom have larger first ionization
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
From the following pairs select the atom with the larger first ionization energy:
Cl, Ar; Be, Ca; K, Co; S, Ge; Sn, Te
(a) Cl; Be; Co; S; Sn
(b) Ar; Be; K; Ge; Te
(c) Ar; Be; Co; S; Te
(d) Ar; Be; Co; S; Sn
(e) Ar; Be; K; S; Te
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