Diatomic molecule- spectroscopy

The carrier gas used in GC is

• Nitrogen

• Helium

• CO2

• Cl2

Selection rule for anharmonic oscillator

• Dv =±1

• Dv =0,±1

• Dv =±1,±2,±3

• none

The source of UV light is

• Nernst globar

• Hg lamp

• Tungsten filament

• H2 lamp

In order to be IR active, the molecule should have

• Dipole moment

• Double bond

• Triple bond

• Lower energy of excitaiton

The type of electrons present in carbonyl compound are

• Sigma electrons

• Pi electrons

• Non bonding electrons

• All of these