15. Which of the following electronic transitions in an atom would be allowed? (The designations in...
Which of the following electronic transitions could lead to the emission of light from an atom? Select all that apply A) 1s-->4p B) 4p-->3d C) 3d-->5f D) 5f-->4d E) 4d-->2p
15. Which of the following transitions in a hydrogen atom would emit the highest energy photon? A. n = 2 to n = 1 B. n = 6 to n = 3 C. n = 2 to n = 8 D. n = 1 to n = 2 E n = 3 to n = 2
15. Which of the following transitions in a hydrogen atom would emit the highest energy photon? A. n = 2 to n = 1 B. n = 6 to n = 3 C. n = 2 to n = 8 D. n = 1 to n = 2 E. n = 3 to n = 2
Please be detailed in explaining. -orbit coupling) of the H atom for n-3 (3s, 3p or 3d') and Give all the atomic states (including spin n-l (Is). (3 points) b. c List all the possible transitions corresponding to the Lyman-ß emission and indicate if these transitions are allowed or forbidden (remember S+S is forbidden). Justify your answer. (4 points) d. What do you infer or all the lines of the Lyman series (transition rom n> I 、n-1)? (1 points) -orbit...
. An element has the following electronic configuration: [Ar]3d1 4s (a) What period does it belong to? (b) What is its group number? (Use group numbers from 1 to 18) (c) What kind of element is it? (Main group metal, transition metal, metalloid, nonmetal?) d) How many unpaired electrons are there in an atom of this element? 2. (a) What element has this electronic configuration? 1s 2s 2p'3s3p (b) What element has this electronic configuration? 3d 4s 4p 3. (a)...
20. An atom of which of the following elements has the smallest ionization energy? A. CI C. Si B. P DS 21. An atom of which of the following elements has the largest second ionization energy? A. Cs С Ро B. Pb D. Ba Q89. 22. Which of the following forms the most stable anion in the gas phase? A. CI (electron affinity -349 kJ/mol) B. S (electron affinity = -200 kJ/mol) CO (electron affinity = -141 kJ/mol) D. C(electron...
An electron in a hydrogen atom in the level n = 5 undergoes a transition to n = 3. Which of the following transitions ( circle any/all correct answer(s) ) would be lower energy? n=2 to n=1 n=3 to n=1 n=5 to n=4 n=4 to n=2 n=6 to n=4
ollowing electronic transitions in a hydrogen atom will result 23) D) C>D>A>B E) D>A>C>B 23) For which of the following ele in the emission of light of the highest energy? A) n=5 to n=1 B) n = 4 to n = 2 C) n=5 to n=3 D) n=1 to n=5 E) n=2 to n=4 24) Choose the valence orbital diagram that represents the ground state of Se?. A) 24) Зр 3s 3p 4P 25) 25) Identify the most reactive alkali...
4. Which of the following transitions of an electron in a hydrogen atom corresponds to the lowest frequency of the emitted photon? (n = 2 → n = 10 means a transition from the state with n = 2 to the state with n = 10) (A) n = 4 → n = 2 (B) n = 5 → n = 3 (C) n = 4 → n = 5 (D) n = 6 → n = 3 (E) n...
X 2. For the following electronic configurations use Hund's rule to determine the ground free ion state. [3x3=9] * a) 1P, 3P, 3F, 'G b) 3P, 5D, 3H, 41, 4G c) 65, 4P, 4G, 21 * 3a. What is the coordination number of the Fe atom in K3[Fe(C204)3]? [2] 3b. What is the coordination number of the Au atom ink[Au(CN)2(SCN)2]? [2] * 3c. Among the following 3d transition metal ions which one is kinetically inert? Cr2+, C03+, Co2+, Fe3+ [2]