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Number of neutrons in an atom of carbon-14 with atomic number 6 is
A6
B8
C14
D2
Answer & Solution
Correct answer: B. 8
1. Number of neutrons = mass number - atomic number.
2. For carbon-14, mass number = 14 and atomic number = 6.
3. Neutrons = 14 - 6 = 8.
4. So carbon-14 has 8 neutrons.
_Source: Selina Concise Chemistry Class 8, Ch on Structure of Atom (Mistral OCR'd PDF), section on isotopes_
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