Exam 40: All About Atoms

The total number of electron states with n = 2 and for an atom is:

An electron in an L shell of an atom has the principal quantum number:

In calculating the x-ray energy levels the effective charge of the nucleus is taken to be Z - b, where Z is the atomic number. The parameter b enters because:

The ratio of wavelength of K _$\infty$ x-ray line for Nb (Z = 41) to that of Ga (Z = 31) is:

The ionization energy of an atom in its ground state is:

In a Moseley graph:

A laser beam can be sharply focused because it is:

The magnitude of the orbital angular momentum of an electron is what multiple of ? ( is a positive integer.)

To observe the Zeeman effect one uses:

When a lithium atom is made from a helium atom by adding a proton (and neutron) to the nucleus and an electron outside, the electron goes into an n = 2, state rather than an n = 1, state. This is an indication that electrons:

An electron is in a quantum state for which the magnitude of the orbital angular momentum is . How many allowed values of the z component of the angular momentum are there?

Space quantization means that:

The quantum number m_s is most closely associated with what property of the electron in an atom?

Photons in a laser beam are produced by:

A metastable state is important for the generation of a laser beam because it assures that:

The group of atoms at the ends of periods of the periodic table are called: