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How many orbitals are there in an atom with each of the following principal quantum numbers? (a) \(1 ;\) (b) \(2 ;\) (c) 3 (d) \(4 ;\) (e) 5

What set of orbitals corresponds to each of the following sets of quantum numbers? How many electrons could occupy these orbitals? a. \(n=2, \ell=1\) b. \(n=5, \ell=3\) c. \(n=3, \ell=2\) d. \(n=4, \ell=3\)

What is meant when two or more orbitals are said to be degenerate?

How do we know from examining the periodic table's structure that the 4 s orbital is filled before the \(3 d\) orbital?

Why is there only one ground-state electron configuration for an atom but many excited-state electron configurations?

Can the ground-state electron configuration for an atom ever be an excited- state electron configuration for a different atom?

List the following orbitals in order of increasing energy in a multielectron atom: a. \(n=3, \ell=2\) b. \(n=5, \ell=1\) c. \(n=3, \ell=0\) d. \(n=4, \ell=1, m_{\ell}=-1\)

Place the following orbitals in order of increasing energy in a multielectron atom: a. \(n=2, \ell=1\) b. \(n=5, \ell=3\) c. \(n=3, \ell=2\) d. \(n=4, \ell=3\)

What are the electron configurations of \(\mathrm{Li}, \mathrm{Li}^{+}, \mathrm{Ca}, \mathrm{F}^{-}\) \(\mathrm{Na}^{+}, \mathrm{Mg}^{2+},\) and \(\mathrm{Al}^{3+} ?\)

In what way are the electron configurations of \(\mathrm{H}, \mathrm{Li}, \mathrm{Na}, \mathrm{K}\) \(\mathrm{Rb},\) and \(\mathrm{Cs}\) similar?