CBSE Guess > Papers > Important Questions > Class XII > 2007 > Chemistry > Atomic Structure and Chemical Bonding

Atomic Structure and Chemical Bonding

1. Particles A & B are in motion. If the wavelength associated with particle A is 5 x 10^-8m. Calculate the wavelength associated with particle B if its momentum is half of A
Calculate the wavelength of 1000Kg rocket moving with a velocity of 3000 km/hr. (h = 6.626 x 10^-34Js)
2. Calculate the uncertainty in velocity of a wagon of mass 2000kg whose position is known to accuracy 10m
3. What is the physical meaning of |x²|?
4. What do you understand by?
   (a) Radial probability density (R²)
   (b) Radial probability function 4pr²R².
   How do they vary with r for 1s, 2s and 2p atomic orbital of Hydrogen atom?
5. Explain why bond order of N₂ is greater than bond order of N₂⁺, but the bond order of O₂ is than that of O₂⁺
6. What is the energy gap in the Band theory? Compare it’s size in conductors, semi-conductors and insulators
7. Which of the following substances exhibit hydrogen bonding?
   (a) CH₃CH₂OH
   (b) CH₃CO-OH
   (c) CH₃-CO-CH₃
   (d) CH₃-CO-NH₂

1. Atomic Structure and Chemical Bonding
2. Solid States
3. Solutions
4. Thermodoynamics
5. Chemical Kinetics
6. Nuclear Chemistry
7. Polymers
8. Biomolecules
9. Chemistry In Every Day Life