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