Question

26. What must be the charge on a Fe ion that is isoelectronic with Com? (1)4 (2)3 (3)2 27. Which statement is true? (1) All 3d orbitals have the same shape, just different orientations orbital can be represented by a sphere. (3) A 3p orbital has the same energy as a 2p orbital of these statements above are true. (4) (2) The 4s (4) None 28. Which statement is true concerning the spectrum of hydrogen obtained from a gas discharge tube? (1) A photon is absorbed as the electron goes from a state with a higher energy to one with a lower energy (2) A photon is absorbed as the electron goes from a state with a lower energy to one with a higher energy (3) A photon is emitted as the electron goes from a state with a higher energy to one with a lower energy (4) A photon is emitted as the electron goes from a state with a lower energy to one with a higher energy. 29. All orbitals with the same value of the principal quantum number are said to belong to the same (1) main shell (2) subshell (3) orbital (4) group (5) period (2) 4p subshell (3) 4 subshell 30. The notation for the subshell with n = 4 and l = 4 is (1) 4d subshell (4) 4s subshell (5) There is no subshell fitting this description 31. Portions of orbital diagrams representing the ground-state electron configurations of certain elements are shown here: HET NE PAS multarum [2 pts) [2 pts) (0) Which violates the Pauli Exclusion Principle? (ii) Which violates Hund's rule?

Answer 1

26 Answer: 0:2 L2Fe: 15², 25, 28, 35, 3p5, 43, 3d 27 C0 : 15², 25², 2 pr, 33, 3pr, 45°, adt cot3 45, 3d 6 (outer consiguration of co+3) Now this configuration equals to fet2 confi- guration le Fet2 outer compt = 453do Charge on tets +2 corect statement The 45 orbitay can be represented by a sphere (3) A photon is emitted as a election goes from a state with a higher onergy to one with a lower energy (1) (4) Group (30) n=4, 1=4 n indicates principle quantum number 4 d indicates azimet hay quantum number when n-4 than 4 is used before orbital. Orbitasse BELGI = O U 2 3 4 option 5 is correct : There is no subshell fitting this description

Page 3 pawi's Exclusion principle There is no any two elecbon in an atom can have all hour quantum number same. There may be 3 quantum numbers are same but 4th quantum no never same. Hund's sule: The lowest energy term is one with the greatest value of spin mutiplicity 1 a, b, e, & structures solates does nor violate the pauli's exclusion principle while structure cod violate the principle 117) All structures violates Hund's ruse. No any spructure & configuration obey's hunds sule or maximum multiplicity