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Find the O.N. of Ca in
Option: 1
2
Option: 2
1
Option: 3
0.5
Option: 4
3
Answers (1)
Rules for Oxidation Number -
In all its compounds, flourine has an oxidation number of -1. Another halogen (Cl, Br, and I) also have an oxidation number of -1, when they occur as halide ions in their compound.
Halogens usually have an O.N. of -1 in their compounds.
O.N.(Ca) + (-2 x O.N(Cl))= 0
O.N.(Ca) + (-2 x (-1))= 0
O.N.(Ca) = +2
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