Identify the element for each of these electron configurations. Then determine whether this configuration is the ground state or an excited state.

a. \(1 s^{2} 2 s^{2} 2 p^{5}\)

b. \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2} 4 p\)