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2 years ago

The table below shows the number of the sub-atomic particles in an atom of nitrogen.

Biology

1 answer:

oee [108]2 years ago

4 0

Answer:

14amu

Explanation:

Given subatomic particles:

Number of protons = 7

Number of Neutrons = 7

Number of electrons = 7

Unknown:

Atomic mass unit; amu of nitrogen

Solution:

The atomic mass unit of a substance is the number of protons and neutrons in such an atom;

Atomic mass unit = number of protons + number of neutrons

This is because the mass of an atom is concentrated in the nucleus;

For the given specie;

Atomic mass unit = 7 + 7 = 14amu

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