Respuesta :

Answer:

The atomic number is 5.

Explanation:

There are 5 protons in the nucleus, so the atomic number is 5. The atomic number always equals the number of protons in the nucleus.

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Answer:

the atomic number is 5 (Boron)

Explanation:

The atomic number always equals the number of protons in the nucleus (they have a positive charge). Since there are 5 protons in the diagram, the atomic number is 5.

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