Which of the following is always the same for multiple isotopes of a single element?
A)atomic number
B)atomic mass number
C)tendency to decay radioactively
D)None of the above are correct.

Question

Quizplus · Accepted Answer

The atomic number of an element is the number of protons in the nucleus, which is unique for each element. Therefore, all isotopes of a single element have the same atomic number. The atomic mass number (B) can vary for isotopes of the same element, as it takes into account the total number of protons and neutrons in the nucleus. The tendency to decay radioactively (C) can also vary for isotopes.

Which of the Following Is Always the Same for Multiple