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STD 11 - 2. structure of atom — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 2. structure of atom4 Marks
MCQ
An element has electronic configuration $ 2, 8, 18, 1. $ If its atomic weight is $63, $ then how many neutrons will be present in its nucleus
  • A
    $30$
  • B
    $32$
  • ✓
    $34$
  • D
    $33$
✓

Answer

Correct option: C.
$34$
c
(c) $Cu_{29}^{63}$ Number of neutrons = atomic mass -atomic number $ = 63 -29 = 34.$

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