because their highest energy electrons are in the d-orbital
what are the characteristics of transition metals?
variable oxidation states
catalysts
complexes
coloured
what catalyst is used for:
hydrogen fuel cells -> platinum
production of amines from nitriles -> nickel
vanadium -> contact process
how do we see light?
when visible white light hits the compound will absorb some of the frequencies and reflect or transmit the rest
explain how we see coloured compounds in terms of energy levels?
when visible light hit, the frequency of the light absorbed will excite an electron causing it to jump to a higher energy level , the gap between energy levels must correspond to a frequency on the visible light spectrum
when the d-orbitals are half full with 5 electrons, the energy level decreases
