16-12-2020
Chemistry

contestada

What is the total number of electrons in an atom of an element with an atomic number of 18 and a mass number
of 40?
a. 58
c. 22
b. 18
d. 40

Respuesta :

arslanamir186 arslanamir186

18-12-2020

Answer:

18

Explanation:

In neutral atom protons and electrons are equal in number as it atomic number or proton number is 18 so electrons are also 18

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