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