The ending which is given for a compound that contains two elements and oxygen is -ite, therefore option (a) is correct.
What do you mean by compounds ?
A compound is a pure substance similar to an element. It represents a combination of two or more elements that are chemically combined in a fixed mass ratio to form a new substance known as a molecule.
These are the substances consisting of 2 or more different types of elements in a fixed ratio of their atoms.
When an element forms two oxyanions, the one with less oxygen is given a name ending in -ite and hence due to this a compound that contains two elements and oxygen ends with -ite ,therefore option (a) is correct.
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