Question

Which have different numbers of electrons
different ions of an element
different isotopes of an element
The nucleus of an element
each of the atoms of an element

Answer 1

Answer:

1.An ion is an atom that has different number of protons and electrons. An isotope is an atom of an element with a different number of neutrons. The nucleus of an element have only protons and neutrons.

2.An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.