Particle and Nuclear Physics II

• The carbon-14 nuclei have slightly different masses.

• The energy released in the decay process is different for each carbon-14 nucleus that decays.

• It is a different element of higher proton number than the original element.

• It is a different element of lower nucleon number than the original element.

• It is an isotope of the original element.

• It is the same element as the original element but with a different proton number.

• A

• B

• C

• D

• Atoms are mostly empty space.

• Most of the mass of an atom is concentrated in the nucleus.

• The nucleus of an atom contains protons.

• The nucleus of an atom is small compared to the size of an atom.

Four nuclei are represented below.

Which statement about these nuclei is correct?

• An uncharged atom of element Q has 24 orbital electrons.

• Nuclei G and M are isotopes of the same element.