(1 point)
Atoms with atomic numbers greater than 100 are unstable.
Exactly half of the isotopes would need an atomic number of 110, and half would need an atomic number of 111, which is very unlikely.
The atomic number is the number of protons, which is always a whole number.
Atoms of an element all have the same whole number of protons and neutrons.
1 answer
The atomic number is the number of protons in an atom, and it is always a whole number. Therefore, it is impossible for an element to have an atomic number of 110.5.
So, the correct answer is:
The atomic number is the number of protons, which is always a whole number.
