Question

write the formula for the carbonate ion.

• subscripts and superscripts are not supported in answer boxes so they are in normal script.

○ so₄²⁻ is written as so4^2-
○ na₂so₄ is written as na2so4

Explanation:

Step1: Recall carbonate ion composition

Carbonate ion consists of one carbon atom and three oxygen atoms.

Step2: Determine charge

Carbonate ion has a charge of \(2 -\).

Step3: Write formula

Based on composition and charge, formula is \(CO3^{2 -}\).

Answer:

\(CO3^{2 -}\)