alleryStart learning →An atom of oxygen has Z = 8 and A = 16. Number of neutrons is:
AEight
BSix
CSixteen
DTwenty four
Answer & Solution
Correct answer: A. Eight
1. Number of neutrons = A - Z.
2. = 16 - 8 = 8.
3. So an O-16 atom has 8 neutrons.
4. It also has 8 protons and 8 electrons (neutral atom).
_Source: Selina Concise Chemistry ICSE Class 9, Ch 4 'Atomic Structure'_
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