Multiple choice

Which of the following is true regarding sodium carbonate compound?

  1. Compound consists of two atoms, i.e. sodium and carbonate.

  2. Valency of carbonate in the compound is - 2.

  3. Two different elements form this compound.

  4. Valency of sodium in sodium carbonate is + 2.
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B Correct answer
Explanation

Formula of sodium carbonate is Na2CO3. Valency of carbonate is - 2 in this compound.

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