Helium is a non metal element. Atomic mass of it is 4.
2
Helium's atomic number is 2.
Hydrogen has atomic number 1 whereas helium's is 2.
Atomic weight: the atomic weight of an chemical element, in atomic mass units or gram atomic mass Atomic mass: the atomic mass of an isotope, in atomic mass units or gram atomic mass Molecular mass: the mass of a molecule, in atomic mass units or gram molecular mass
The atomic mass is the mass of a molecule, atomic particle or sub-atomic particle.
Atomic no.=no. of protons Atomic mass=no. of protons+no. of neutrons Hence, atomic mass is greater
3 times, heliums mass is 4 and carbons mass is 12
atomic number is a number atomic mass is a mass
gas is heliums only state of matter
The atomic mass unit is used to express the measure of the atomic mass.
What is the atomic mass of oxygen