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| 1. |
Which one of the following elements shows more than one oxidation states ?(a) Sodium (b) Fluorine (c) Chlorine (d) Potassium |
| Answer» (c) Chlorine shows O.S. from –1,+1 to +7, whereas others show O.S. as Na, +1 ; K, +1 ; F, –1 | |