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Atoms and Molecules — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceAtoms and Molecules2 Marks
Question
What do the following denote?
  1. N
  2. 2N
  3. N2
  4. 2N2
✓

Answer

  1. N– One atom of nitrogen.
  2. 2N– Two separate atoms of nitrogen.
  3. N2– One molecule of nitrogen.
  4. 2N2– Two molecules of nitrogen.

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