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Question

What is the mass number of an ion with 13 protons, 14 neutrons, and a -1 charge?

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Choose one · Correct answer highlighted

Explanation

Given: What is the mass number of an ion with 13 protons, 14 neutrons, and a -1 charge? Formula: Mass number (A) = protons + neutrons = 13 + 14 = 27. Substitution & Calculation: Charge affects electrons (14), not mass number. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

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