NEET Chemistry Ionization Energy MCQ Question
Which of the following combinations correctly describes the properties of ionization energy?
Ionization energy is always positive; second ionization energy is greater than the first.
Ionization energy decreases down a group; it does not depend on atomic size.
Ionization energy increases across a period; it can be negative due to electron shielding.
First ionization energy is lower for noble gases; second ionization energy is always less than first.
Correct Answer
Detailed Explanation
Ionization energy is always a positive value, and the second ionization energy is higher than the first due to the increased difficulty in removing an electron from a positively charged ion, as stated in the NCERT context.
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