A polyatomic ion is a group of elements that has a charge that is not 0. for example the charge of P04 is -3
Answer:
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Explanation:
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Answer:
Oxygen 16 has 8 protons and 8 neutrons while Oxygen 18 has 8 protons and 10 neutrons . These are isotopes of oxygen i.e same no. of protons but different no. of neutron .
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