Choose the transition (in a hydrogen atom) below that represents the absorption of the shortest wavelength photon.

An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has

Which of the following statements about the phases of matter is TRUE?

An atom of 26Mg contains ________ neutrons.

How many protons (p) and neutrons (n) are in an atom of Tc?

Identify the correct values for a 4f sublevel.

How many protons are in nickel?

Choose the ground state electron configuration for Zn2⁺.

Give the ground state electron configuration for Pb.

Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does NOT contain an error.