Download Answers to Questions at the end of Lecture 3

 Answers to Questions at the end of Lecture 3 1. Provide a valid set of quantum numbers, n, l and ml, of an electron in a 4p orbital? (Question form 2015 exam) n = 4, l = 1 and (for example) ml = +1 2. Which of the following is a valid set(s) of quantum numbers and identify the incorrect number in the other set(s)? A. n = 1 l = 1 ml = 0 ms = +1/2 Incorrect l must be < n B. n = 3 l = 1 ml = +1 ms = +1/2 Valid C. n = 2 l = 0 ml = -­‐1 ms = -­‐1/2 Incorrect ml cannot be > l D. n = 2 l = 2 ml = +2 ms = -­‐1/2 E. n = 3 l = 2 ml = 0 ms = 0 3. Sketch the shape of a px orbital. How many electrons can it accommodate? x
2 electrons 4. Which quantum number describes the shape of an orbital? The angular momentum quantum number, l 5. How many sub-­‐shells are there in the n = 3 shell? Three sub-­‐shells (s, p, d)