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Plz help it’s due in 20 minutes
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Plz help it’s due in 20 minutes

Plz help it’s due in 20 minutes-example-1
User Mozami
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Answer:

protons and neutrons

Step-by-step explanation:

User John Alexander Betts
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Answer:

The atomic number in the upper left hand corner of a square in the periodic table is the number of protons in an atom.

Step-by-step explanation:

User DogCoffee
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