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03-09-2020
Chemistry

contestada

A atom has 20 electrons, 21 neutrons, and 20 protons. What is the atomic mass of the atom?

Respuesta :

poudelbinda8 poudelbinda8

12-09-2020

name= calcium

atomic mass= 40.078 atomic mass unit

no of protons= 20

no of electrons=20

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