Question

Which of these statements is not true?question 20 options:atoms of isotopes of an element have different numbers of protons.atoms of the same elements can have different masses.atoms are mostly empty space.the nucleus of an atom has a positive charge.save?

Answer 1

Atoms of isotopes of an element have different numbers of protons. i took the test

Answer 2

the first one is the answer
isotopes of an atom have different number of neutrons . the number of protons are not different in isotopes of an atom