The sum of the number of protons and neutrons in a nucleus is called __________ of the isotopehttps://go-math-science.com/chemistry/atoms-molecules-and-ions/definitions/the-sum-of-the-number-of-protons-and-neutrons-in-a-nucleus-is-called-__________-of-the-isotopehttps://go-math-science.com/@@site-logo/logo-new.png
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The sum of the number of protons and neutrons in a nucleus is called __________ of the isotope