1. Preparation - Chapter 2.1a, Chapter 2.1b, Chapter 2.1c, Chapter 2.1d, Chapter 2.1e

2. Participation -
   
   Assignment 4
   P.70 Q13-16 and P.83 Q20, 21, 24
   
   Assignment 5
   P.83 Q26, 27, 29, 30, 32, 33
   

3. Presentation - Blackboard, Student's Work

4. Possession
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1. Preparation - Chapter 2.2a (Duality of light), 2.2b (Wave nature of matter), 2.2c0(Electron Interference), 2.2c1(De Brogile Wavelength), 2.2c2(Circular stationary wave)

2. Participation - Assignment P.77 Q5, Q6(a) & (c), Q7(a) & (c), Q8-10 and P.83 Q22, 23, 25, 28, 31

3. Presentation - Blackboard, Student's Work

4. Possession
   > ...

Continuous/Line and Absorption/Emssion spectrum... There are indeed

• emission continuous spectrum... coloured spectrum (e.g. sun)

• absorption continuous spectrum... coloured background with dim(dark) lines

• emssion line spectrum... line spectrum (discharge tube)

• absorption line spectrum... line spectrum, some dimmer or even disappear

How line spectrum verifies discrete energy levels?

• E.M. wave is emitted due to electron transition between energy levels while E = hf.

• Each line in a line spectrum corresponds to a specific frequency, and hence energy E.

• Line spectrum is the result of discrete energy change between energy levels of atom.

• So, the energy levels of atom are discrete.