WHAT is the valency of - fluorine in CaF2 , Sulphur in SF6 , PHOSPHORUS in PH3 , carbon in CH4
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valency of - fluorine in CaF2 = -1
" " "" """ Sulphur in SF6 = 2
PHOSPHORUS in PH3 = 3
carbon in ch4 = 4
" " "" """ Sulphur in SF6 = 2
PHOSPHORUS in PH3 = 3
carbon in ch4 = 4
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