(a)[5]
Describe the structure of an atom of this oxygen isotope. In your answer, include: where the protons, neutrons and electrons are found in the atom; how many protons, neutrons and electrons the atom contains.
(b)[2]
Which two statements about isotopes are correct? Tick two boxes. Isotopes of the same element do not have the same number of protons. Isotopes of the same element have different numbers of neutrons. Every isotope is radioactive. The isotope $^{235}_{92}\text{U}$ can be used as a source of energy. $^{14}_{6}\text{C}$ and $^{14}_{7}\text{N}$ are isotopes of one another.
(c)[1]
What is the meaning of the term nucleon number?