MCQ
Consider an imaginary ion ${ }_{22}^{48} X ^{3-}$. The nucleus contains 'a'$\%$ more neutrons than the number of electrons in the ion. The value of '$a$' is $.....$ [nearest integer]
- ✓$4$
- B$3$
- C$8$
- D$5$
✓
Answer
Correct option: A.
$4$
a
${ }_{22}^{48} X ^{3-}$
${ }_{22}^{48} X ^{3-}$
No. of neutrons $=26$
No. of electrons $=25$
$\%$ of extra neutrons
than electrons $=\frac{26-25}{25} \times 100=4$
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