When an atom is found in pairs it is referred to as a molecule.

When an atom is found in pairs it is referred to as a diatomic molecule.

Explanation:

An example of a diatomic molecule is oxygen.

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a diatomic molecule

Explanation:

When two atoms combine, it forms an covalent bond, the collection of atoms is called a molecule. This proves that a molecule is  the simplest unit of a covalent compound.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: