1.An isotope of an atom with a larger number of neutrons is larger than an isotope of the same atom that contains fewer neutrons.
Answer ‘1’
An isotope of an element has a ‘DIFFERENT’ number of neutrons.
e.g.
Hydrogen
protium ; no neutrons
deuterium ; one neutron
tritium ; two neutrons.
True-False
1. An isotope of an atom with a larger number of neutrons is larger than an isotope of the same atom that contains fewer neutrons. — FALSE The size of an atom is determined by the “size” of the electron cloud, which is not likely to be affected by the number of neutrons. If you’re talking about the size of nucleus, all bets are off. Little is known about the precise sizes of nuclei. It might seem like the nucleus should be larger if there are more neutrons, but that isn’t known for sure. All we know for sure is that it is more massive if it has more neutrons.
2. Isotopes of the same element differ only in the number of electrons they contain. FALSE
3. Isotopes of the same element don’t usually have the same properties. FALSE The chemical properties are the same and only the properties which depend upon mass are different for different isotopes of the same element.
4. Some elements have 3 or more naturally occurring isotopes. TRUE
5. Isotopes of the same element have the same mass. FALSE
1. True, by a very small amount.
2. False
3. False, they have almost identical properties.
4. True
5. False, the mass changes.
