Given that mh = 1.007825 u, is the mass of a hydrogen atom 1h greater than, less than, or equal to 1/12 the mass of a 12c atom? select the correct answer and explanation. given that = 1.007825 , is the mass of a hydrogen atom greater than, less than, or equal to 1/12 the mass of a atom? select the correct answer and explanation. 1/12 of the mass of a 12c atom is greater than 1 u. therefore, the mass of the hydrogen atom is greater than 1/12 of the mass of a 12c atom. 1/12 of the mass of a 12c atom is less than 1 u. therefore, the mass of the hydrogen atom is less than 1/12 of the mass of a 12c atom. 1/12 of the mass of a 12c atom is exactly 1 u. therefore, the mass of the hydrogen atom is less than 1/12 of the mass of a 12c atom. 1/12 of the mass of a 12c atom is exactly 1 u. therefore, the mass of the hydrogen atom is greater than 1/12 of the mass of a 12c atom. 1/12 of the mass of a 12c atom is exactly 1 u. therefore, the mass of the hydrogen atom is equal to 1/12 of the mass of a 12c atom.