How many hydrogen and nitrogen atom on the left side?(Reactants) 2Hydrogen atoms +2 Nitrogen atoms 3Hydrogen atoms +1 Nitrogen atom

To determine the number of hydrogen and nitrogen atoms on the left side (reactants), we need to analyze the given chemical equation:<br /><br />$2H + 2N \rightarrow 3H + 1N$<br /><br />From the equation, we can see that there are 2 hydrogen atoms and 2 nitrogen atoms on the left side (reactants).<br /><br />Therefore, the number of hydrogen atoms on the left side is 2, and the number of nitrogen atoms on the left side is also 2.