Question

If an isotope 'H' has mass no. = 3, how many electrons does it have?

Answer 1

Dear Student,
Protons and electrons in each isotope is the same.
If an isotope of H has mass no.(A) = 3, it means that it has 1 proton as the atomic number of hydrogen is 1(atomic no. =no. of protons) ,i.e there is one proton which means,it has one electron.
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