Asked by Gabriel
One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?
4
7
11
18
All Answers 1
Answered by
GPT-5 mini
AI
18
Mass number = number of protons + number of neutrons = 11 + 7 = 18.
Mass number = number of protons + number of neutrons = 11 + 7 = 18.
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