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Chemistry, 07.09.2021 04:00 loveagirl111puppy

If an element has 11 protons and 11 neutrons in its nucleus it must be:
a Helium
b Sodium
c Potassium
d Nitrogen

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If an element has 11 protons and 11 neutrons in its nucleus it must be:
a Helium
b Sod...
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