1.45 (a) Sketch the shape of the boundary surfaces corresponding 1s- 2p-, and 3d-orbitals. (b) What is meant by a node? (c) How many radial nodes and angular nodal surfaces does each orbital have? (d) Predict the number of nodal planes expected for a 4f-orbital.

Give only typing answer with explanation and conclusion 1. How many degenerate orbitals are in each of the following subshells? (Enter 0 if there are none.) a) n = 6, l = 0 2. Identify the subshell in which electrons with the following quantum numbers are found. (Enter your answers in the format 1s, 2p, etc.) a) n = 6, l = 4 b) n = 2, l = 0 c) n = 4, l = 3

Give all possible mĮ values for orbitals that have each of the following values: (a) 1 = 1 -1, 0, +1 −2,−1, 0, +1, +2 −3,−2, −1, 0, +1, +2, +3 (b) n = 3 (choose all possible solutions) -1, 0, +1 -2,−1, 0, +1, +2 -3, -2, -1, 0, +1, +2, +3 (c) n = 2,1=0 O 0 −1, 0, +1 −2,−1, 0, +1, +2 -3.-2.-1.0. +1. +2. +3

Write noble gas core ground-state electron configurations for atoms of (a) calcium; (b) chromium; (c) lead.