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AnnyKZ [126]
3 years ago
5

HELP ME ILL MARK U BRAINLEST

Biology
1 answer:
Igoryamba3 years ago
7 0

Answer:

I think its first one

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<h3>Who was Charles Darwin ?</h3>
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Isotopes are variants of a particular chemical element which differ in neutron number (neutral particle)and all isotopes of a given element have the same number of protons (positive particle) in each atom.So isotope B of the sodium will have 11 protons, 11 electrons but it may have a wide range in its number of neutrons.

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