Question

40. Use molecular orbital theory to develop the electron configuration of Please also find the bond order and determine if it is paramagnetle or diamagnetie, 41. What is the wavelength of microwave radiation with a frequency of 1.365 x 10°/sco? 42. What is the energy of a photon corresponding to radio waves of frequency 1.258 x 101/sec? 43. Calculate the frequency of electromagnetic radiation emitted by the hydrogen atom in the electron transition from n = 4 to n - 2. 44. What is the wavelength of a neutron traveling at a speed of 7.48 m/sec? 45. Write the Lewis formula for IF4

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Answer 1

8:47 PM Mon 28 Oct 68% 10 5 7 8 9 + 0 I tu I outer é= 7 f " é = 7 Mybridisations 2 r no ff valence 7 + No of monovalent) + Negative charge) = { [7+4+1] = { 112/26 Bond pair 4 Lone pain =2 Geometry square planar O atom OH

Molecular electronic con guraticos of O₂ Celection = 2x8 = 16 ) al phox/12 8202 *22² 222 2222 =22py? #2px' = $2boy' For out > als² a 11² 522² 722² 2222² 222 222py? g* 2p= 0*2 by Bord order -£[ho of ontingeNo open horrding It = { [lo - 5) = 25 has one non paired is paramagnetic é so it

4 Frequency = 1.365 7108 st wavelength (4) = € (speed of light) alveg e = 88108 mat 1:365 800 = 3_7108-6 1. 365 = 2119 x 10²m Ans.

8:39 PM Mon 28 Oct 68% 0 5 5 - 8 9 + 4. Ea h19 h z plank Const = 6.6 X 10-34 Is Ez 6-6410-24 JAX 1258 x 10ls = 6.6x1024x1.258 J = 8.8 x1024 J ans. wy Speed = wavelength period - 7.48mst en 1 sec 1 = 7.48 mat al sec - 7.48 m. rons

43 Rydbeng's formula - 2 l 2 1 1 2 [2] R2 Rydberg's constant 109677 cm To 109677 [ar - 10969760'[t-t = 109677 cas [ 4-1 ] - 10967? Como D = 20 5644cm! vog . ct (to 5) = 3x108 ms x 20564cm/ = 3 *108x8 cm 6 205244 = 51693.3 x 10" ,-/ z 6.6 x 100 or v