Assertion (A): The first ionization energy of Nitrogen is higher than that of Oxygen. Reason (R): Nitrogen has a half-filled p-orbital which is exceptionally stable. MCQ with Answer and Explanation

Assertion (A): The first ionization energy of Nitrogen is higher than that of Oxygen. Reason (R): Nitrogen has a half-filled p-orbital which is exceptionally stable.
A. A is false but R is true.
B. Both A and R are true and R is the correct explanation of A.
C. A is true but R is false.
D. Both A and R are true but R is NOT the correct explanation of A.
Answer: Option B
Solution (By JKSSB Mock Tests)
Nitrogen (1s2 2s2 2p3) has a exactly half-filled p-subshell, which confers extra stability due to symmetry and exchange energy. Oxygen (1s2 2s2 2p4) has one paired electron in the p-orbital, leading to electron-electron repulsion, making it easier to remove. Thus, N has a higher IE than O. Both are true and R explains A.

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Which of Faraday's laws of electrolysis states that the mass of substance deposited is directly proportional to the quantity of electricity passed?
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Correct Answer: Option B


Explanation:
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Correct Answer: Option B


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A mixture of two immiscible liquids can be separated by:
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Correct Answer: Option C


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