MCQ
The mass number of a nucleus is
- AAlways less than its atomic number
- BAlways more than its atomic number
- CAlways equal to its atomic number
- ✓Sometimes more than and sometimes equal to its atomic number
✓
Answer
Correct option: D.
Sometimes more than and sometimes equal to its atomic number
d
(d)In hydrogen, atomic number and mass number are equal.
(d)In hydrogen, atomic number and mass number are equal.
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