By definition, an element is a single atom, not a molecule.
It is a type of chemical compound that contains the element Hydrogen. Chemical compounds are molecules of two or more elements in fixed proportions. Ex. CH4
Helium
it is a diatomic molecule
Diotomic Molecule.
element and molecules
If a molecule is made of only one type of atom, then it is a pure element in molecular form. For example, hydrogen gas, as it was used in balloons before the Hindenburg caught fire, is a pure element. That gas consists of hydrogen molecules - H2. Hydrogen gas nearly always forms two-atom molecules and is still a pure element. The Oxygen in the air is a pure element but it also is only found as two-atom gas-molecules - O2. The well-known Buckyballs which are large molecules of carbon are nothing but carbon and therefore are molecules of one element - pure carbon.
That is called a diatomic element. Hydrogen and Oxygen are two examples of diatomic elements.
That is called a diatomic element. Hydrogen and Oxygen are two examples of diatomic elements.
The element that contains only two 2p electrons is helium.
Diatomic molecules. Halogens in particular.
No, it is not. It contains two elements: H and F.
Two isotopes have two neutrons: 3H and 4He.