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Cacium has 20 electrons in a atom. Oxidation number of it is +2.

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8y ago
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11y ago

0 for the elemental form, +2 in its compounds.

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9y ago

Calcium is located at the fourth period and the second group of the Periodic Table. It has 20 electrons. Atomic calcium's oxidation number is 0, where that of calcium ion is +2.

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11y ago

+2 for calcium

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13y ago

The only oxidation number is 2+.

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11y ago

+2 for Ca

-2 for O

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11y ago

+2 for Ca, -1 for each F

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15y ago

2.

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Q: What is the oxidation number of calcium fluoride?
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