The sum of protons and neutrons in the nucleus of an atom is known as ____?
Everyday Science / Basics of Every Day Science EDS — Multiple-choice practice
ایٹم کے نیوکلئس میں پروٹان اور نیوٹران کا مجموعہ ____ کے نام سے جانا جاتا ہے؟
- A. Mass Number
- B. Atomic Mass
- C. Atomic Number
- D. Valance Number
Correct answer
Mass Number
Explanation
Explanation The mass number (A) is the sum of protons and neutrons present in the nucleus of an atom. It is a measure of the total number of nucleons (protons and neutrons) in the nucleus. It helps determine the atomic mass and distinguishes isotopes of an element. Last verified on 19-03-2026
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