The atomic number of the element Helium is two.
Helium is a non metal element. Atomic number of it is 2.
The atomic number of Helium is 2.
The atomic number of helium is 2. It has 2 protons in its nucleus, which defines its atomic number.
The noble gas with the smallest atomic number is helium, with an atomic number of 2.
Helium has two electrons as its atomic number is 2.
2 electrons as the atomic number of helium is 2
Helium's atomic number is 2 and its atomic mass is 4
2 is the atomic number (or the number of protons) of helium.
The element is Helium witht he atomic number, 2.
Helium is a metal element. Atomic number of it is 2.
The atomic number of ununtrium is 113; the atomic number of helium is 2. 1132=12 769
The atomic number of helium (He) is 2. This means that helium has 2 protons in its nucleus.