Which ion has the same configuration as neon?

A. Na⁺ A.

B. F⁻ B.

C. O²⁻ C.

D. All of the above D.

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

The answer is d) All of the above. Here's why:
Neon (Z=10) configuration:
Neon has 10 electrons and its electron configuration is 1s² 2s² 2p⁶.
Na⁺:
Sodium (Na) has 11 electrons. When it loses one electron to form Na⁺, it has 10 electrons, matching Neon's configuration.
F⁻:
Fluorine (F) has 9 electrons. When it gains one electron to form F⁻, it has 10 electrons, matching Neon's configuration.
O²⁻:
Oxygen (O) has 8 electrons. When it gains two electrons to form O²⁻, it has 10 electrons, matching Neon's configuration.
Therefore, all of the given ions (Na⁺, F⁻, and O²⁻) have the same electron configuration as Neon, which is 1s² 2s² 2p⁶.

Practice MCQ for SSC, UPSC, RRB Exams

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

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