What do the following abbreviation stand for? 1. O 2. 2O 3. O_2 4… - Vidyadip

Question

What do the following abbreviation stand for?

$O$
$2O$
$O_2$
$3O_2$

✓

Answer

$O^- $ One atom of oxygen.
$2O^-$ Two separate atoms of oxygen.
$O_{2^-}$ One molecule of oxygen.
$3O_{2^-}$Three molecules of oxygen.

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