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Chemistry NMDCAT MCQs Moles and Avogadro's Numbers
nmdcat.online July 2, 2026

The total number of electrons in 1.7 g of ammonia gas (NH₃) is (Atomic numbers: N = 7, H = 1)

A. 6.022 × 10²³
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B. 3.011 × 10²³
C. 6.022 × 10²⁴
D. 3.011 × 10²⁴

📝 Explanation

1.7 g NH₃ = 0.1 mole. Each NH₃ molecule has 10 electrons. Therefore, total electrons = 0.1 × 10 × Nₐ = 6.022 × 10²³.

📖 Additional Information

  • 6.022 × 10²³
  • 3.011 × 10²³
  • 6.022 × 10²⁴
  • 3.011 × 10²⁴

1.7 g NH₃ = 0.1 mole. Each NH₃ molecule has 10 electrons. Therefore, total electrons = 0.1 × 10 × Nₐ = 6.022 × 10²³.

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