Table of contents

1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

5. Molecules and Compounds

Polyatomic Ions

Introduction to Chemistry

5. Molecules and Compounds

Polyatomic Ions

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Multiple Choice

The silicate ion is the silicon version of the carbonate ion. Based on this description, provide the structure of the silicate ion.

SiO₃^4-

SiO₃^3-

SiO₃^2-

SiO₂^2-

SiO₂^3-

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Verified step by step guidance

Understand the basic structure of the silicate ion. The silicate ion is similar to the carbonate ion, which is CO3^2-. This means the silicate ion will have a similar structure but with silicon replacing carbon.

Identify the chemical formula for the silicate ion. The silicate ion is typically represented as SiO3^2-. This indicates that the ion consists of one silicon atom and three oxygen atoms, carrying a -2 charge.

Visualize the structure of the silicate ion. The silicon atom is at the center, surrounded by three oxygen atoms. The charge of -2 suggests that there are two extra electrons distributed among the oxygen atoms, contributing to the overall negative charge.

Consider the oxidation states. Silicon typically has an oxidation state of +4, while oxygen has an oxidation state of -2. In the silicate ion, the total oxidation state should balance to match the charge of the ion.

Review the options provided. The correct structure for the silicate ion is SiO3^2-, which matches the typical representation and charge of the silicate ion.