Chemistry
WAEC 2022
Ionization energy increases across the period in the periodic table because
-
A.
atomic number increases
-
B.
effective nuclear charge increases
-
C.
mass number decreases
-
D.
screening effect decreases
Correct Answer: Option B
Explanation
As the nuclear charge increases, its attraction for the outermost electron increases and so more energy is required to remove the outermost electron. Hence, the ionization energy increases.
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