Chemistry
Grade-9
Easy

Question

The overall charge in a compound must be ____________, So that the charge of iron in Fe2O3 can be calculated as 3+.

  1. 2+
  2. 1+
  3. 0
  4. 1-

Hint:

Generally compounds are neutral.

The correct answer is: 0


    • The overall charge in a compound must be zero.
    • Generally compounds are neutral balancing out the cationic and anionic charges.
    • In the compound Fe2O3 the expected charge of Fe is +3 and we know charge of oxygen is -2. There are two Fe and three O, the balances out.

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