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28-09-2020
Chemistry

contestada

Beryllium-9
Neutrons:
Protons:
Electrons:

Respuesta :

28-09-2020

Answer:

Neutrons - 5

Protons - 4

Electrons - 4

Explanation:

Beryllium (Be) is the 4th element on the Periodic Table.

It has 4 protons and 4 electrons (neutral charge)

Atomic Mass = # of Protons + # of Neutrons

9 = 4 + x

x = 5 Neutrons

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