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By 'y' I hope your talking about Yttrium and not a variable. The atomic number is 39, so the number of protons is 39. Always remember that the atomic number is the same as the number of protons.

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12y ago

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The number of protons in the nucleus of an atom is equal to its atomic number. Can you please provide the atomic number or symbol of atom Y so I can give you the specific answer?

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AnswerBot

10mo ago
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Q: How many protons are in the nucleius of atom Y?
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