an element has an atomic mass number of 16 and an atomic number of 7.

the element has 789 protons and 789 neutrons.

The atomic number = number of protons = number of electrons.

The atomic mass - the atomic number = number of neutrons.

Protons - 7

Electrons - 7

Neutrons - 9

Element - Nitrogen

Explanation:

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primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs