1. The problem is to identify the molar mass of hydrogen (H) given the atomic number and symbol. 2. Hydrogen (H) has an atomic number of 1, which means it has 1 proton. 3. The molar mass of hydrogen is approximately 1.0 grams per mole (g.mol$^{-1}$). 4. This means that one mole of hydrogen atoms weighs about 1.0 grams. 5. The molar mass is a fundamental property used in chemistry to relate the amount of substance to its mass. Final answer: The molar mass of hydrogen (H) is 1.0 g.mol$^{-1}$.