Chemistry
What is the valency of :
(a) fluorine in CaF2
(b) sulphur in SF6
(c) phosphorus in PH3
(d) carbon in CH4
(e) Manganese in MnO2
(f) Copper in Cu2O
(g) Magnesium in Mg3N2
(h) nitrogen in the following compounds :
(i) N2O3 (ii) N2O5 (iii) NO2 (iv) NO
Valency
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Answer
(a) Valency of fluorine in CaF2 is -1.
(b) Valency of sulphur in SF6 is +6.
(c) Valency of phosphorus in PH3 is +3.
(d) Valency of carbon in CH4 is +4.
(e) Valency of manganese in MnO2 is +4.
(f) Valency of copper in Cu2O is +1.
(g) Valency of magnesium in Mg3N2 is +2.
(h) Valency of nitrogen in the given compounds :
- N2O3 = +3
- N2O5 = +5
- NO2 = +4
- NO = +2
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