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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
MCQ
The atomic radius of hydrogen is in nanometers:
  • A
    37nm
  • B
    0.37nm
  • C
    0.037nm
  • D
    0.0037nm
✓

Answer

  1. 0.037nm

Explanation:

Element Symbol Atomic number Atomic radius in nanometers
Hydrogen H 1 0.037
Helium He 2 0.05
Lithium Li 3 0.152
Beryllium Be 4 0.111
Boron B 5 0.088
Carbon C 6 0.077
Nitrogen N 7 0.070
Oxygen O 8 0.066
Fluorine F 9 0.064
Neon Ne 10 0.070
Sodium Na 11 0.186

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