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Atoms and Molecules — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceAtoms and Molecules2 Marks
Question
What do the following denote?
  1. $N$
  2. $2N$
  3. $N_2$
  4. $2N_2$
✓

Answer

  1. $N–$ One atom of nitrogen.
  2. $2N–$ Two separate atoms of nitrogen.
  3. $N_2–$ One molecule of nitrogen.
  4. $2N_2–$ Two molecules of nitrogen.

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