Using the periodic table, complete the following. Element: hydrogen symbol: H_(2) Molecular weight: square g Mass of one mole: hat (v)g/mol

To complete the information for hydrogen using the periodic table:<br /><br />- **Element**: Hydrogen<br />- **Symbol**: \( H_2 \)<br /><br />Hydrogen is typically found as a diatomic molecule, hence the symbol \( H_2 \).<br /><br />- **Molecular weight**: The molecular weight of \( H_2 \) is calculated by adding the atomic weights of two hydrogen atoms. The atomic weight of one hydrogen atom is approximately 1.008 g/mol. Therefore, the molecular weight of \( H_2 \) is:<br /><br /> \[<br /> 2 \times 1.008 = 2.016 \, \text{g/mol}<br /> \]<br /><br />- **Mass of one mole**: The mass of one mole of \( H_2 \) is the same as its molecular weight, which is:<br /><br /> \[<br /> \hat{v} = 2.016 \, \text{g/mol}<br /> \]<br /><br />Thus, the completed information is:<br />- Molecular weight: \( 2.016 \, \text{g} \)<br />- Mass of one mole: \( 2.016 \, \text{g/mol} \)