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Ammonium
NH/4+
Hydroxide
OH-
Nitrate
NO/3-
Hydrogencarbonate
HCO/3-
Carbonate
CO/3²-
Sulphate
SO/4²-
Covalent Bond
The covalent bond is the electrostatic force of attraction between the shared pair of electrons (negative) and the (positive) nuclei of the bonded atoms
Ionic Bond
Electrostatic force of attraction between oppositely charged atoms
Metallic Bond
The attraction between the positive ions in a regular lattice and the delocalised electrons