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Q.

Which of the following elements has the lowest ionization energy?

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a

N

b

Ne

c

O

d

F

answer is B.

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Detailed Solution

O has the lowest ionization energy. Across the periodic table, the first ionisation energy fluctuates in a predictable manner. Groups of the ionisation energy diminish from top to bottom, and over a time, it rises from left to right.

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Which of the following elements has the lowest ionization energy?