Dear aspirant, Ionic compounds are materials whose atoms have formed ionic bonds rather than molecules with covalent bonds. The ionic bonds form when atoms that have loosely held electrons in their outer shell react with atoms that need an equivalent number of electrons to complete their electron shells. In such reactions, the electron donor atoms transfer the electrons in their outer shells to the receiving atoms. Both atoms then have complete and stable outer electron shells. The donor atom becomes positively charged while the receiving atom has a negative charge. The charged atoms are attracted to each other forming the ionic bonds of the ionic compound.

Definition of IUPAC. International Union of Pure and Applied Chemists, the standards body that among other things, makes recommendations regarding the names of newly discovered elements and establishes other chemistry related standards (such as the labeling of groups on the periodic table).

IUPAC naming -

the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). IUPAC names can sometimes be simpler than older names, as with ethanol, instead of ethyl alcohol.

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