Answer:
The important
events of light reaction are
(i) Excitation of chlorophyll
molecule to emit a pair of electrons and use of their energy in the formation
of ATP from ADP + Pi. This process is called photophosphorylation.
Splitting of
water molecule
(a) 
(b)
End products
of light reaction are NADPH and ATP.
Reducing
power is produced in the light reaction i.e., ATP and 
molecules
which are used up in dark reaction, 
is
evolved as a by product by the splitting of water.
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