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NEET 2010
Exam
NEET
Year
2010
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

NEET 2010 · Chemistry · Some Basic Concepts of Chemistry

The number of atoms in 0.1 mole of a triatomic gas is (N_ A =6.02 ×...

The number of atoms in 0.1 mole of a triatomic gas is (NA=6.02×1023 mol−1)\left(\mathrm{N}_{\mathrm{A}}=6.02 \times 10^{23} \mathrm{~mol}^{-1}\right)

Options

  1. A6.026×10226.026 \times 10^{22}
  2. B1.806×10231.806 \times 10^{23}
  3. C3.600×10233.600 \times 10^{23}
  4. D1.800×10221.800 \times 10^{22}

Correct answer

B. 1.806×10231.806 \times 10^{23}

Step-by-step solution

Number of atoms = number of moles ×NA×\times \mathrm{N}_{\mathrm{A}} \times atomicity =0.1×6.02×1023×3=1.806×1023 atoms \begin{aligned}& =0.1 \times6.02 \times10^{23} \times3 \\ & =1.806 \times10^{23} \text{ atoms } \end{aligned}
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