Helium has completely filled orbitals, is stable and is not reactive. Hence they exist as mono atomic
Helium is mono atomic.
Helium is mono atomic
Neither. Helium is a noble gas mono atomic element.
Helium is found as a mono atomic element. It is not found as a mineral.
helium is an element, it is a mono atomic molecule, He2 .
Helium is a mono atomic chemically inert gas and is found only in the atmosphere.
The noble gases, e.g. helium, argon, neon, etc. are monoatomic gases.
It is a colorless, odorless, tasteless, non-toxic, inert, mono atomic gas at STP
A molecule of helium is composed of two helium atoms.
None. Helium has completely filled orbitals it is stable and chemically inert (non-reactive). So, helium exists as mono atomic and not as a diatomic species.
They have completely filled valence electrons, hence are stable, chemically inert. So they exist as mono atomic species and not as molecules
Helium is a noble gas with an atomic number of 2, meaning it has 2 protons in its nucleus. This atomicity indicates that each helium atom has a single electron cloud surrounding its nucleus. Helium typically exists as a monatomic gas under standard conditions.