Helium has 2 protons and 2 neutrons, so the answer is 4.
The atomic mass average for helium is approximately 4.0026 atomic mass units.
It's just 4.002602 amu
Helium with an atomic mass of 4.00260
The relative atomic mass of helium is 4.0026.
The element that has an atomic mass four times greater than helium is beryllium. Helium has an atomic mass of 4.0026 and beryllium has an atomic mass of approximately 9.0122.
The atomic mass average for helium is approximately 4.0026 atomic mass units.
It's just 4.002602 amu
Helium is a non metal element. Atomic mass of it is 2.
Helium with an atomic mass of 4.00260
4.002602 g/mol
Helium's atomic number is 2 and its atomic mass is 4
The relative atomic mass of helium is 4.0026.
Helium is a metal element. Atomic number of it is 2.
The element that has an atomic mass four times greater than helium is beryllium. Helium has an atomic mass of 4.0026 and beryllium has an atomic mass of approximately 9.0122.
Symbol: He atomic #: 2 atomic mass: 4.002602
The molar mass of helium is 4 g/mol. This means that 1 mole of helium has a mass of 4 grams. Since 2.5 moles of helium have a mass of 10 grams, the atomic mass of helium is 4 grams/mol.
4