Question

Your name: (U) The green light from the traffic si a. What is the wave length in nm of this radiation? (3sz(". gnal has frequency 5 (3pts) 5.76x10 Hz (s b. Calculate the energy associated to this radiation. Plank's constant h-6.83x10 (3pts) (Il) Write a Lewis dot structure of COs and show all possible resonance structures of COs (3pts) (IlI) Write short hand (condensed) electronic configuration of the following atoms and ions: (3pts each) 2) Ba 1) As 4) Te 3) Mn ite Lewis Dot structure for the following atoms and ions: (4 pts each) 3) XeF (IV) Wr 2) HCN 1) HNOs

Answer 1

Answer (l)a: We can calculate the wavelength in nm of this radiation from the equation as given below frequency of oscillation(f)X wavelength (A)speed of light (c) or A c/ Given, frequency of green light (f)-5.75 X 10" Hz (s1) Also, speed of light (c) 3.0 X 108 ms1 Therefore, cf λ-3.0 X 108 ms-1 / 5.75 X 1014 s-1 λ-5.22 X 10.7 m Now, 1 m-109 nm Therefore, λ-, 5.22 X 10" m-, 5.22 X 10 "X 109 nm-: 522 nm Answer ()b: To calculate the energy associated to this radiation, we have to use the equation, E = hv. Where, Eenergy h Planck's constant (6.63 X1034 Js) frequency of light (that's is the frequency of green light) Therefore, E=hv E = 6.63 X10-34 Js X 5.75 X 1014 s-1 E 3.81 X 1019J