Please help me understand my chemistry. my teacher explained it so vaguely. Thanks?

if you have an isotope of 2H, how many protons, neutrons, and electrons are there? if you have an isotope of 14C then how many of each do you have? if you have 2 neutrons and 1 electron then what is the isotope? if you have 238U then how many of each do you have? if you have an electron of 92 and a mass number of... show more if you have an isotope of 2H, how many protons, neutrons, and electrons are there?
if you have an isotope of 14C then how many of each do you have?
if you have 2 neutrons and 1 electron then what is the isotope?
if you have 238U then how many of each do you have?
if you have an electron of 92 and a mass number of 235, what is the isotope?
and also if you have an atomic number of 82 and a mass number of 206, what is the isotope?
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