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Helium contains two electrons in all naturally occurring states.
Helium atom has 2 electrons.
Helium will have only 2 electrons
Helium has two valence electrons
Helium has 2 valence electrons.
There are no electrons present in a helium atom in its second energy level.
Helium atom has 2 electrons.
A neutral atom of helium has 2 electrons.
2
helium has 2 electrons as its atomic number is 2
Helium will have only 2 electrons
Helium is a non metal element. There are 2 electrons in a single atom.
Helium has two valence electrons
Helium has 2 valence electrons.
There are no electrons present in a helium atom in its second energy level.
2. The atomic number which is 2 stands for how many protons (also electrons, in an uncharged atom) are in the element's atom.
It depends on the charge of the atom/ion however in a no-charged state Helium will have 2 electrons. If the Helium is charged negatively will have more. If it is charged possitively (up to 2+) it will have less. As Helium is a noble gas, it is rarely found in a charged state!
The electron configuration of helium is 1s2; two electrons on the first (and the single) electron shell.