Whether itâs âchin up lassâ or âIâm proud of youâ, discover the family classic that says it best. Explore our recipes here.hether itâs âchin up lassâ or âIâm proud of youâ, discover the family classic that says it best. Explore our recipes here.
Hydrogen: Symbol: H: Atomic Number: 1: Atomic Mass: 1.00794 atomic mass units: Number of Protons: 1: Number of Neutrons: 0: Number of Electrons: 1: Melting Point-259.14Â° C: Boiling Point-252.87Â° C: Density.08988 grams per cubic centimeter: Normal Phase: Gas: Family: Nonmetal: Period: 1: Cost: $1.00 per gram
Atomic mass. The atomic mass (ma) is the mass of an atom. Its unit is the unified atomic mass units (symbol: u, or Da) where 1 unified atomic mass unit is defined as 1â12 of the mass of a single carbon-12 atom, at rest.