Helium has a nucleus with 2 protons, 2 neutrons. It has only one energy level with 2 electrons in it.
The element with atomic structure similar to an alpha particle is helium. An alpha particle consists of two protons and two neutrons, the same as the nucleus of a helium atom.
Atomic StructureNumber of Energy Levels: 1First Energy Level: 2
The atomic number of Helium is 2.
Helium's atomic number is 2 and its atomic mass is 4
4.002602 g/mol
The noble gas with the smallest atomic number is helium, with an atomic number of 2.
The radioactive alpha particle has the same structure as the atomic nucleus of helium. They are usually formed and emitted during alpha decay.
The atomic number of helium is 2. It has 2 protons in its nucleus, which defines its atomic number.
It's just 4.002602 amu
The atomic number of the element Helium is two.
The atomic symbol for helium on the periodic table is He.
Helium is a non metal element. Atomic mass of it is 4.00.