Question

5. For ench value of l=0, 1, and 2, what are the possible values for me? Fill them in the following table. e possible me values 0 6. For n=4, identify the possible values for l. 7. For l = 3, identify the possible values for me. 3. What is the maximum number of electrons in an atom that can have the following quantum numbers: (a) n =5,1 - 3 (b) n=4,1 = 1, m=0 (c) 3p 2. Which of the following represent impossible combinations of'n and I: (a) Ip. (b) 4s, (c) 5f, (d) 2d?

Answer 1

We know the 4 quantum numbers Principal quantum number (n): n gives the information of orbit K, L, M, N. n values are 1,2, 3, 4, 5, .... Azimuthal quantum number (e The value of (n-1), the values are 0,1,2,3... upto (n-1 1 tells about the number of sub shells, shape of sub shells If E0, s sub shell 1,p sub shell. = 2, d sub shell Magnetic quantum number (m Magnetic quantum number gives the orientation of sub shells The value ofm varies from-e to + through 0. For example: 2. Then me vales are -2, -1, 0, , 2 Spin quantum number (m) The value of ms is +1/2 or -/2. Spin may be clock wise or anti clock wise. Given data 5) Possible me values t to +e through 0) 0 -1, 0, + -2, -1,0, +1, +2 1 2

6) for n 4, e values are 0,1.2.3 in generally The upto (n-) given n is 4, so answer is 0 to (4-1) 3 so t values are 0, 1, 2, 3. 7) 3, me valus The value of m varies from -e to +e through 0 so -3, -2,-1,0, +1, +2, +3 is the answer.