Hydrogen Element Name : Hydrogen Symbol : H Atomic number : 1 Relative atomic mass ( A r ) : 1.008 range: [1.00784, 1.00811] m [see notes g m r] Standard state : gas at 298 K Appearance : colorless Classification : Non-metallic physical properties of Hydrogen: Hydrogen is the littlest synthetic component since it comprises just a single proton in its core. Its image is H, and its nuclear number is 1. It has a normal nuclear load of 1.0079 amu, making it the lightest component. Hydrogen is the most bountiful synthetic substance known to man, particularly in stars and gas monster planets. Notwithstanding, monoatomic hydrogen is uncommon on Earth is uncommon because of its affinity to frame covalent bonds with most components. At standard temperature and pressing factor, hydrogen is a nontoxic, nonmetallic, unscented, bland, dismal, and profoundly burnable diatomic gas with the sub-atomic equation H2. Hydrogen is likewise predominant on Earth ...