The molecular formula H2O or as everyone knows it, Water, is the most abundant substance on earth. It Is Important to any living organism as we can not live without it. Water is clear, odorless, and can become a solid, gas, or liquid. The bond forms because hydrogen has 1 electron in its outer shell while oxygen has 6, meaning that with 2 hydrogens joining with oxygen the 2 electrons from the hydrogen atom join with the 6 electrons in the oxygen atom to make a full 8 electrons in its outer shell.

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