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Argon and Calcium both have an atomic mass that rounds to 40, but they have different atomic numbers. What are the differences between the two atoms, based on the information given?
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Argon and Calcium both have an atomic mass that rounds to 40, but they have different atomic numbers. What are the differences between the two atoms, based on the information given?

User Will N
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2 Answers

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They are separated by their proton count.

Calcium has 20 protons, while Argon has 18 protons.
User Erwanp
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based on the information given I know they are separated by their amount in electrons with neatrons able to vary them as well when in the same element and also vary despite the estimate
User Dima Melnik
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