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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
MCQ
Mass number is denoted by:
  • A
    $D$
  • B
    $S$
  • ✓
    $A$
  • D
    $Z$
✓

Answer

Correct option: C.
$A$

The mass number $(A)$ is the number of nucleons, which is the total number of protons and neutrons in the nucleus of an atom.

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