MCQ
The sodium nucleus $_{11}^{23}Na$ contains
  • A
    $11$ electrons
  • B
    $12$ protons
  • C
    $23$ protons
  • $12$ neutrons

Answer

Correct option: D.
$12$ neutrons
d
(d) Number of neutrons =$A - Z = 23 - 11 = 12.$

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