JEE Main | 2018Chemical BondingEasy
Question
The recommended concentration of fluoride ion in drinking water is up to 1 ppm as fluoride ion is required to make teeth enamel harder by converting [3Ca3(PO4)2·Ca(OH)2] to :
Options
A.
[3(CaF2)·Ca(OH)2]
B.
[3(Ca3(PO4)2·CaF2]
C.
[3(Ca(OH)2]·CaF2]
D.
[CaF2]
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