How many electrons are in the ion, Zn2+?

Each of the following sets of quantum numbers is supposed to specify an orbital. Which of the following sets of quantum numbers contains an error?

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⁺.