Why do atoms bond in both ionic and covalent bonds?

Question

Why do atoms bond in an ionic bond?
and why do they bond in a covalent bond?

Answer 1

Atoms bond to form more stable substances. The most stable an atom can be is if it can have the maximum number of electrons in its outer orbit. It can achieve this be either

1. giving up or taking an electron from another atom. This is ionic bonding.

2. sharing electrons with another atom. This is covalent bonding

Answer 2

In general, atoms bond to release energy. The way atoms bond depends on the atoms themselves and the the entity the atoms bonds with. For example, metals of the "alkali" and "alkaline earth" groups (like sodium and calcium) rarely bond other than ionically. Oxygen will form ionic bonds with these metals, but if the resulting oxide is contacted with water, the oxygen bonds covalently with hydrogen from the water to create the "hydroxide ion",or OH- . Atoms in groups adjacent to each other tend to form covalent bonds, such as compounds of carbon and nitrogen. Carbon rarely, if ever, bonds ionically.

Answer 3

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