Haley noticed a small spot on her skin that turned out to be skin cancer. which treatment is her doctor most likely to use?

a. brachytherapy

b. superficial external beam radiation therapy

c. radiopharmaceuticals

d. high intensity focused ultrasound

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .