MCQ
In $_{88}Ra^{226}$ nucleus, there are
- ✓$138$ protons and $88$ neutrons
- B$138$ neutrons and $88$ protons
- C$226$ protons and $88$ electrons
- D$226$ neutrons and $138$ electrons
✓
Answer
Correct option: A.
$138$ protons and $88$ neutrons
$138$ neutrons and $88$ protons
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