Next to each formula write the number of atoms of each element found in one unit of the compound - sodium sulfide
1 answer:
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Answer:
One or more number of species which have same number of atomic number but different mass number are called isotopes.
For example, are the isotopes of hydrogen.
So here, the atomic number of each of these isotopes is 1 and have different mass number, that is, 1, 2, 3.
Answer:
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