Quantum numbers and shapes of s, p, d orbitals
- Match List I with List II.List I (Quantum Number): A. m_l B. m_s C. l D. nList II (Information provided): I. shape of orbital II. size of orbital III. orientation of orbital IV. orientation of spin of electronChoose the correct answer from the option… Answer: 3. A-III, B-IV, C-I, D-II Key idea: each quantum number gives one property of the electron or orbital. m_l : orientation of the orbi... 1
- The relation between n_m, (n_m = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is Answer: 2. l = n_m - 1/2 Key idea: For a given l , m takes values from -l to +l including 0. Number of values: n_m = 2l + 1 . Rearranging, l... 1
- Identify the incorrect statement from the following. Answer: 1. The shapes of d_xy , d_yz , and d_zx orbitals are similar to each other ; and d_(x²-y²) and d_z² are similar to each other. Key i... 1
- Which one is a wrong statement ? Answer: 2. The electronic configuration of N atom is1s ² 2s ² 2p _x¹ 2p _y¹ 2p _z¹ shown as orbital box diagram: 1s [up down], 2s [up down],... 1
- How many electrons can fit in the orbital for which n = 3 and l = 1? Answer: 4. 2 Key idea: one orbital holds at most 2 electrons (Pauli principle). n=3,l=1 is the 3p subshell, which has 3 orbitals (6 electron... 1
- Which of the following pairs of d-orbitals will have electron density along the axes? Answer: 2. d_z², d_(x²-y²) Key idea: d_z² and d_(x²-y²) have lobes along the axes; d_xy, d_yz, d_xz have lobes between the axes. So the pair... 1
- Two electrons occupying the same orbital are distinguished by : Answer: 4. Spin quantum number Key idea: two electrons in the same orbital have the same n, l and m. By the Pauli exclusion principle they m... 1