_____ will have the lowest first ionization energy.
A) Beryllium
B) Magnesium
C) Calcium
D) Strontium
E) Barium

Name: _____ will have the lowest first ionization energy. A) Beryllium B) Magnesium C) Calcium D) Strontium E) Barium
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Question

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Barium (E) will have the lowest first ionization energy because it is the furthest down in Group 2 of the periodic table. Elements further down a group have electrons in higher energy levels, which are further from the nucleus and thus easier to remove.

_____ Will Have the Lowest First Ionization Energy