virisf30901 virisf30901

26-08-2021
Chemistry

contestada

How do I solve this?

How do I solve this class=

Relax

Respuesta :

Eyadaqrabawi Eyadaqrabawi

26-08-2021

Answer:

C

Explanation:

Particles inside the nucleus = protons + neutrons = mass number = 84

particles outside = electrons number = atomic number

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