Which of the following is always the same for different isotopes of a single element?
A)atomic number
B)atomic mass
C)tendency to decay radioactively
D)half-life

Question

Quizplus · Accepted Answer

Atomic number is the number of protons in the nucleus of an atom, which defines the element. Isotopes of the same element have the same number of protons, hence the same atomic number. Atomic mass, tendency to decay radioactively, and half-life vary among isotopes of the same element.

Which of the Following Is Always the Same for Different