Question

Identify without calculation in (which transition in hydrogen atom will emit shorter wavelength radiation? explain briefly.

choice A-electronic transition from n=7 to n=1
choice B-electronic from n=7 to n=6

1. Consider the energy level diagram of the hydrogen atom according to the Boihr (right) (a) Is light absorbed or emited when an electron goes from the level n 4 to n-3 (no explanation needed) med 0.136 0 242 (b) What is the wavelength, in nm, of the light that would be absorbed 0 545 or emitted if the transition in part (a) occurred? Note that the energy seale is in units of 10 15 J. 2. Identify without any calculation in (which electronic transition in hydrogen atom will emit shorter wavelength radiation? Explain briefly Choice A-electronic transition from n-7 to n-1 Choice B - electronic transition from n 7to6 2.179 3. Answer the next 3 questions using the following: A microwave oven L ーーーーーーーーーーー heats 378 g of water (specific heat of water 4.184 g-C) from 21°C to 96 C using a radiation of 15.5 mm. a. Calculate the joules ofenergy ned to het this water Solve the problem below and write your answer in the blank 11Ks b. Calculate the frequency and energy of one photon. Remember to use the wavelength in meters (m). Solve the problem below and write your answer in the blank ) . x \ O ^-2? р), о.

Answer 1

2. Electronic transition from n=7 to n=1 will emit shorter wavelength radiation. Because energy is inversely proportional to wavelength. So, from n=7 to n=1 electronic transition emit shorter wavelength radiation due to high energy gap. Answer is choice A.