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QB - Science - 4 elements
RECHARGEABLE BATTERIES
QUICKSILVER
JOSEPH PRIESTLY
LIGHTEST AKALI METAL
LIQUID AT ROOM TEMPERATURE
LIGHTEST ELEMENT
H
THIRD MOST ABUNDANT ELEMENT IN UNIVERSE
LI
LIGHTEST CHALCOGEN
CAVENDISH
O
BIPOLAR DISORDER
MAD HATTER
MOST ABUNDANT ELEMENT IN THE UNIVERSE
HG
4
