The mass of a proton is 1.007276 amu, and the mass of a neutron is 1.008665 amu. Since the nucleus of a helium 4 atom is made up of 2 neutrons and 2 protons, the sum total of these components is 4.031882 amu. One amu, atomic mass unit, is defined as one twelfth of the mass of a carbon 12 atom.
What is the chemical formula of helium?
The chemical formula for helium is He. It is a noble gas with stable configuration 1s² and atomic number is 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table.
What type of element is helium?
Helium (from Greek: ?λιος, translit. Helios, lit. ‘Sun’) is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table.
Where is helium found in the world?
Helium is the second most abundant element in the universe, but here on earth, it’s rather rare. Most people guess that we extract helium from the air, but actually we dig it out of the ground. Helium can be found in certain parts of the world, notably in Texas, as a minor component in some sources of natural gas.