Practice problem
Which two of the following choices are isotopes of each other?
An atom with an atomic number of 1 and a mass number of 2
An atom with an atomic number of 2 and a mass number of 2
An atom with an atomic number of 6 and a mass number of 14
An atom with an atomic number of 1 and a mass number of 1
Type a concept, like “slope” or “photosynthesis”.
