Chemistry-Ionization Energy
NEET Chemistry Ionization Energy MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a diagram depicting the trend of ionization enthalpy across the second period of the periodic table. If the elements are arranged from lithium to neon, which of the following represents the correct trend in ionization enthalpy?
A
Li < B < Be < C < O < N < F < Ne
B
Li < Be < B < C < N < O < F < Ne
C
Li < B < Be < C < N < O < F < Ne
D
Li < Be < C < B < N < O < F < Ne
Correct Answer
Option A
Detailed Explanation
The correct order of ionization enthalpies among second period elements is Li < B < Be < C < O < N < F < Ne, where Be has higher ionization enthalpy than B due to its filled 2s subshell, and O has lower ionization enthalpy than N and F due to electron repulsion in its half-filled 2p orbital.
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