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Question: Answered & Verified by Expert
One mole of carbon atom weighs 12g, the number of atoms in it is equal to, (Mass of carbon -12 is 1.9926×10-23g
ChemistrySome Basic Concepts of ChemistryNEETNEET 2020 (Phase 2)
Options:
  • A 1.2×1023
  • B 6.022×1022
  • C 12×1022
  • D 6.022×1023
Solution:
2036 Upvotes Verified Answer
The correct answer is: 6.022×1023
1 mole of carbon atom \(=12 \mathrm{~g}\)
1 mole of a carbon atoms \(=6.022 \times 10^{23}\) atoms
Hence, mass of \(6.022 \times 10^{23}\) atoms of carbon \(=12 \mathrm{~g}\)
Mass of 1 atom of carbon \(=\frac{12}{6.022 \times 10^{23}}=1.9 \times 10^{-23} \mathrm{~g}\)

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