Answer
A religious artwork of Christ , the Virgin Mary or a Saint that was used to honor the figure was called Icon.
Explanation
Icon refers to an image with a religious content, meaning and usefulness. The style used in an art does not make a painting an icon but the subject, meaning and application. Not all representations of a religious subject is an Icon. Icons in modern days are used as symbols to give people a kind of symbolic image of holy persons in heaven.
Tetravalent
We have already seen an example of how a covalent bond can form between two hydrogen atoms producing molecular (H2) as opposed to the atomic form of hydrogen. ... As in all its compounds and its elemental forms, carbon is tetravalent, which means that it always forms four bonds.
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