Question

Argon has atomic number 18
and mass number 40. Find the
number of electrons, protons
and neutrons.​

Answer 1

Answer:

‌‌The atomic number is the total number of Protons/Electrons.

So,

the number of Protons is 18

the number of Electrons is 18.

The mass number of an atom is the total number of Protons added to the total number of Neutrons.

So, the number of Neutrons is The number of Protons subtract from the Mass number.

40 - 18 = 22

So the number of Neutrons is 22.

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