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Chlorine has an atomic number of 17. How many protons are in
the nucleus of a chlorine atom?

User Vnge
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Answer:17 protons

Step-by-step explanation:

An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons. So although chlorine has a mass number of 35 which means it has 18 neutrons, it can also have a mass number of 37, which means it has 20 neutrons.

User Bill Zhang
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