MCQ
The nucleus of the element $_{21}{E^{45}}$ contains
- A$45$ protons and $ 21$ neutrons
- ✓$21$ protons and $24$ neutrons
- C$21 $ protons and $45 $ neutrons
- D$24 $ protons and $21$ neutrons
✓
Answer
Correct option: B.
$21$ protons and $24$ neutrons
b
$(b) 21$ Protons and $24$ Neutrons are present in nucleus and element is $Sc.$
$(b) 21$ Protons and $24$ Neutrons are present in nucleus and element is $Sc.$
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