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myrzilka [38]
3 years ago
5

What is the mass number of sodium?

Chemistry
2 answers:
Nataliya [291]3 years ago
5 0

Answer: Since all sodium atoms have 11 protons, this one has 11 protons. This tells us that it also has 11 electrons. Since the mass number is 23, we know that the sum of protons and neutrons in the nucleus must equal 23.

So the answer is : Mass number = 23

Explanation:

Rina8888 [55]3 years ago
4 0
23 sowwy if im wrong 0_0
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