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(N0) all the natural positive numbers, together with zero. N0 = {0; 1; 2;...
drawing a line in the diagram of a molecule to indicate where electrons are shared.
a bond formed when non-metal atoms share a pair of valence electrons to form a molecule.
a solid network of atoms making up a large crystal with covalent bonds between the atoms.
a method used to refine petrol by breaking covalent bonds between carbon atoms using heat and a...