They can be, but are not always.
NH4+ has covalent N-H bonds.
OH- has a covalent O-H bond.
However, these are also ions, which do not involve covalent bonding to other atoms:
Na+
Ca2+
Cl-
Water is composed of hydrogen and oxygen. Each water molecule contains 1 oxygen atom and 2 hydrogen atoms joined by a covalent bond.
The number of unpaired electrons determines the number of covalent bonds that can be formed by an atom.
A carbon atom can form 4 single covalent bonds
A maximum of four covalent bonds.
The nitrogen atom forms 3 covalent bonds.
Molecule :)
more than one oxygen atom joined together by single covalent bonds
Water is composed of hydrogen and oxygen. Each water molecule contains 1 oxygen atom and 2 hydrogen atoms joined by a covalent bond.
Water has covalent bonds.The bonds between atoms in a water molecule are covalent bond, somewhat polar ones.
The number of unpaired electrons determines the number of covalent bonds that can be formed by an atom.
Covalent bonds between a hydrogen atom and an oxygen atom.
A carbon atom can form 4 single covalent bonds
covalent bonds are when one atom shares the same valence electrons with another atom other.Covalent bonds are how atoms stay together
A maximum of four covalent bonds.
The nitrogen atom forms 3 covalent bonds.
An atom can make a number of covalent bonds equal to the number of electrons it needs to fill its outer shell
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