2. Atoms & Elements

Which property of carbon-14 allows scientists to use it for dating dead organisms?

On another planet, the isotopes of titanium have different numbers of which subatomic particle?

How many neutrons does a typical carbon-12 atom have?

Bromine has an atomic number of 35. How many neutrons are present in the most abundant isotope of bromine?

Which of the following oxygen isotopes is the most abundant in nature?

Which of the following pairs of symbols represent atoms that are isotopes of each other?

How many neutrons are in an atom of lithium with an atomic mass of 7?

How many electrons are present in one atom of the isotope 13C?

Which of these refers to atoms with the same atomic number but different atomic masses?

Can the isotope 235U decay directly into an isotope of 236Pb through a single nuclear decay process?

Which statement correctly describes radioactive isotopes?

Which of the following statements correctly describes isotopes?

Which of the following isotopes has the greatest number of protons?

Which of the following best describes the composition of an isotope of calcium (atomic number 20)?

How many neutrons are present in the isotope lithium-8?