4. From the information you have gathered using the graphs, make a general
statement on the trend of ionization energy across a period and down a
group.
5. Using your periodic table, which has lower ionization energy between the given
pair?
a. Be or Sr _____
c. F or s _____
b. K or Se _____
d. Al or o _____
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Answer:
Summary. Ionization energy refers to the amount of energy needed to remove an electron from an atom. Ionization energy decreases as we go down a group. Ionization energy increases from left to right across the periodic table.
Explanation: