One of the key components of the double-exposition concerto form is the
a. single exposition.
b. chorale.
c. cadenza.
d. theme.

The cadenza is an integral part of a double exposition concerto and is added near the end as a solo.

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.