The Structure of the Atom Answers

The table below gives the atomic mass and relative abundance values for the three isotopes of element M.Relative abundance (%)Atomic mass (amu)78.9923.985010.0024.985811.0125.9826What is the average atomic mass (in amu) of element M?

Which two particles are found in the nucleus of an atom?

An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?

What is the charge on an electron?

A particle that travels around the nucleus of an atom in orbitals is called a(n)

The diagram below shows some subatomic particles.What is the particle that is labeled with a question mark (?) in the diagram?

Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?

A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

Boron occurs naturally as two isotopes. What is the difference between these isotopes?