Question

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Answer 1

Answer:

2 and 1

Explanation:

1.The formula of iron (III) oxide is given as Fe2O3.

The formula is derived by taking the valency of the compound. Generally, oxygen (O) has a valency of 2 .

2. All active metals are found in Group I of the periodic table (i.e., on the left side of the periodic table), except hydrogen, which is not considered a metal and lies at the top left hand corner of the periodic table.

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