The hydrogen in acids and bases is considered to be covalently bonded, although it shares some characteristics of an ionic bond.
So, the hydrogen atoms in:
nitranion (amide ion) (NH2-)
Ammonia (NH3)
Ammonium (NH4+)
are all considered to be covalently bonded.
However, associated ions would be considered to be ionically bonded:
NH2-Na+
NH4+Cl-
Ammonia is covalent compound.
Ammonia is covalently bonded.
An ammonia molecule has covalent bonds in it.
NH3 is eventually covalent because they are sharing electrons.
Ammonia is a covalent compound. It is a compound of two nonmetals, nitrogen and hydrogen, so the difference in electronegativity is not great enough to cause ionic bonding.
Ammonia is covalent compound.
Ammonia is covalently bonded.
Covalent
An ammonia molecule has covalent bonds in it.
NH3 is eventually covalent because they are sharing electrons.
Ammonia is a covalent compound. It is a compound of two nonmetals, nitrogen and hydrogen, so the difference in electronegativity is not great enough to cause ionic bonding.
Covalent. NF3 is the fluoride equivalent of ammonia (NH3).
polar covalent
Covalent. The Nitrogen atom shares 3 of its outer electrons with 3 hydrogen atoms.
If you just mean compounds that are alkaline (basic), they can be either. Sodium carbonate and potassium hydroxide are ionic bases, while ammonia and phosphine are covalent bases.
Ammmonia is a covalant compound. It has a lone pair on the nitrogen atom.
Ammonia is molecular (or covalent) compound because the bond between N and H in ammonia is formed by the sharing of electrons between N and H.