Definition of Binary Compound



Binary compounds are those chemical compounds that are composed of two different elements. An element is known as such an entity which cannot be further broken down into simpler substances even by the use of chemical methods. The binary compounds may have only one atom of each element present in it or it may be comprised of more than one atom of each compound.

 


The binary ionic compounds are those compounds that are composed of ions that belong to two different elements. One of the elements is present in the form of an anion and the other as a cation. The element which has higher electron affinity is typically a non-metal whereas that which has low ionization energy is a metal. There is a complete transfer of electrons from the nonmetal to the metal atom and hence an ionic compound is formed consequently.

 


Example of Binary compounds:

Water, sodium iodide, cesium chloride, etc. are examples of binary compounds.

 

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