Element R is located in Group 16 and period 3 of the periodic Table. Element R reacts with hydrogen to form a compound. Determine the molecular formula of the compound formed
Atom R has 6 valence electrons because it is situated in Group 16 if the periodic Table. Proton number of a hydrogen atom=1
>Electron arrangement of a hydrogen atom=1
>A hydrogen atom has one valence electron.
Two hydrogen atoms combine with one R atom.
>molecular formula
Example 2.3
Non-metal J reacts with non-metal Q to form a molecule with the molecular formula