The Structure of the Atom Answers

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

What is the charge on an electron?

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

The table below gives the numbers of protons, electrons, and neutrons in four atoms.AtomNumber of protonsNumber of neutronsNumber of electrons198929983991049109Based on the table, which atom has a charge of –1?

A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What particles is the scientist studying?

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

A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?

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?

In which of these statements are protons, electrons, and neutrons correctly compared?

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