Answer all 4 parts with in 30 minutes it is urgentThank you 5. Answer the following conceptual questions as concisely as possible.(a) What exactly is a spin, and how does it differ from orbital angular momentum?(b) Give a brief description of the WKB approximation technique, its conditions of applicabilityand limitations.A(c) An electron is found in the 2p orbital of hydrogen. Use the selection rule for electron tran-sitions and identify possible states the given electron can transition to, and give examplesof states such an electron cannot jump to.C(d) Can an electron spontaneously absorb a photon and undergo transition into a higher state?Why or why not?

Spin is an intrinsic form of angular momentum acrried by elementary particles, and thus by composite…

5. Answer the following conceptual questions as concisely as possible. (a) What exactly is a spin, and how does it differ from orbital angular momentum? (b) Give a brief description of the WKB approximation technique, its conditions of applicability and limitations. (c) An electron is found in the 2p orbital of hydrogen. Use the selection rule for electron tran- sitions and identify possible states the given electron can transition to, and give examples of states such an electron cannot jump to. ♥ (d) Can an electron spontaneously absorb a photon and undergo transition into a higher state? Why or why not?

5. Answer the following conceptual questions as concisely as possible. (a) What exactly is a spin, and how does it differ from orbital angular momentum? (b) Give a brief description of the WKB approximation technique, its conditions of applicability and limitations. (c) An electron is found in the 2p orbital of hydrogen. Use the selection rule for electron tran- sitions and identify possible states the given electron can transition to, and give examples of states such an electron cannot jump to. ♥ (d) Can an electron spontaneously absorb a photon and undergo transition into a higher state? Why or why not?