Ionization energy generally increases across a period because: MCQ with Answer and Explanation

Ionization energy generally increases across a period because:
A. Effective nuclear charge increases
B. Nuclear charge decreases
C. Atomic radius increases
D. Number of shells increases
Answer: Option A
Solution (By JKSSB Mock Tests)
Across a period, electrons are added to the same shell, but the number of protons increases, leading to a greater effective nuclear charge. This pulls electrons closer, decreasing atomic radius and making it harder to remove an electron, so ionization energy increases.

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The neutron was discovered by James Chadwick in 1932 by bombarding which element with alpha particles?
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Correct Answer: Option A


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