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.
The
technique of blocking some parts of a photograph to emphasize (or draw
attention to) another part of the same photograph is called <span>Framing </span>
