The Historical Development of Atomic Theory Answers

The table below gives some characteristics of element Y.Characteristics of element YValuesMass number11Number of neutrons in a single atom6Average atomic mass (grams/mole)10.81What is the identity of element Y?

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

The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?

What is the charge on an electron?

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?

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

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?

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

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

Which statement describes an electron?