Helium atom is neutral and has no charge. It becomes a positive ion with a charge of +1 when it loses an electron.
Helium is chemically inert and does not form any type of ions.
Yes, helium can be induced to ionize (form ions) by applying a voltage across the gas in a plasma discharge tube, e.g. a "neon" sign. But under ordinary chemical conditions, helium does not ionize or form bonds (share its electrons) with other atoms.
Noble gases' atoms have the least tendency to form ions.
Helium is a neutral atom that has several isotopes and can become an ion.
If one electron has been removed from Helium's electron shell then it is a He+ ion. If both of its electrons have been removed it becomes a He2+ ion. Either way they are both positive ions.
When a helium atom loses an electron, it forms a helium ion which is positively charged because it has one less electron than protons. This helium ion is written as He+.
Helium has two valence electrons. O6+ ion (a hypothetical ion) will also have 2 valence electrons.
If only the monopositive ions are considered, helium would create the ion with highest electronegativity.
Nuclear emission of a helium ion is called alpha decay.
Atoms or ions that have the same number of electrons as helium (2 electrons) are considered isoelectronic with helium. Examples of species that are isoelectronic with helium include H+, Li+, Be2+, and B3+.
When helium loses an electron, it becomes a positively charged helium ion (He+).