nitrogen can :)
yes
Elements such as hydrogen (H), nitrogen (N), oxygen (O), fluorine (F), chlorine (Cl), bromine (Br), and iodine (I) can form diatomic molecules joined by single covalent bonds. For example, H2, N2, O2, F2, Cl2, Br2, and I2.
All of the elements hydrogen, fluorine, chlorine, bromine, and iodine have this property.
He2 does not exist.Cl2 is joined by a single covalent bond and N2 by a triple covalent bond.That means O2 is the molecule joined by double covalent bond
Every halogen can form their molecules by a single covalent bond.
The valence electrons
This category includes all of the following, and there may be other: O2, CO, and NO.
O2 and N2 are diatomic molecules that are joined by a double covalent bond. Cl2 and He2 do not exist as stable diatomic molecules with double covalent bonds.
Polar diatomic molecules are made of two different atoms joined by a covalent bond. This bond results in an uneven distribution of electrons, leading to a separation of charge and the development of a dipole moment.
The element that forms a diatomic molecule with a triple covalent bond is nitrogen (N). Nitrogen molecules consist of two nitrogen atoms sharing three pairs of electrons to form a triple covalent bond.
Organic
Diatomic oxygen is a diatomic molecule joined by a double covalent bond.