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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
Question
Work out the formulae for the following compounds:
`Sodium oxide.
✓

Answer

Sodium oxide:
$\ \text{Symbols}:\ \ \ \ \ \text{Na}\ \ \ \ \ \ \ \text{O}\\ {\text{Valencies}}:\ +1\ \ \ \ -2$
Thus, the formula of sodium oxide is $\mathrm{Na_2O}$

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