Questions: Isotopes are atoms of the same element that differ in their Multiple Choice 31 electron number. neutron number. proton number. chemical properties. atomic number.

Solution Steps

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons. This means that while they have the same atomic number, their mass numbers differ due to the variation in the number of neutrons.

• Electron number: Isotopes of an element have the same number of electrons when they are neutral atoms.
• Neutron number: This is the defining characteristic of isotopes; they differ in the number of neutrons.
• Proton number: Isotopes have the same number of protons, as they are the same element.
• Chemical properties: Isotopes generally have similar chemical properties because they have the same electron configuration.
• Atomic number: Isotopes have the same atomic number, as this is determined by the number of protons.

Final Answer