How do atoms share electrons?

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Explanation:

Usually, electrons. The charges will balance. ... That's why they end up sharing electrons. One pair of atoms will have a slight positive charge each and an electron fills that need of both together perfectly, then the atoms share that electron and you get a bond.

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under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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