1. Write the formula of the complex ion involving copper and water. 2. Specify the type of bonding present in this ion. 3. Explain why methane cannot form a similar complex with Cu... 1. Write the formula of the complex ion involving copper and water. 2. Specify the type of bonding present in this ion. 3. Explain why methane cannot form a similar complex with Cu²⁺. 4. With reference to chromium, list two properties of transition elements that are characteristic of transition elements. 5. Identify the organic compound shown. 6. Identify a primary amine from the given list. 7. From the listed organic compounds, identify the aldehyde and the alcohol that can be oxidized to a ketone. 8. Draw the structural formula of 3-methylbutan-2-one.
Understand the Problem
The question contains several parts related to chemistry, including writing formulas, identifying compounds, and drawing chemical structures and properties. It assesses knowledge on complex ions, organic compounds, and structural formulas.
Answer
1. [Cu(H2O)6]²⁺; 2. Coordinate bonding; 3. Methane lacks lone pairs; 4. Variable oxidation states, colored compounds; 5. 3-chloro-2-butanone; 6. NH2CH3; 7. CH3CHO, CH3CH(OH)CH3; 8. CH3COCH(CH3)CH3.
- [Cu(H2O)6]²⁺; 2. Coordinate bonding; 3. Methane lacks lone pairs. 4. Variable oxidation states, colored compounds; 5. 3-chloro-2-butanone. 6. NH2CH3; 7. CH3CHO (aldehyde), CH3CH(OH)CH3 (alcohol). 8. Draw CH3COCH(CH3)CH3.
Answer for screen readers
- [Cu(H2O)6]²⁺; 2. Coordinate bonding; 3. Methane lacks lone pairs. 4. Variable oxidation states, colored compounds; 5. 3-chloro-2-butanone. 6. NH2CH3; 7. CH3CHO (aldehyde), CH3CH(OH)CH3 (alcohol). 8. Draw CH3COCH(CH3)CH3.
More Information
Transition metals can form complex ions due to their ability to adopt different oxidation states and coordinate with various ligands. Methane cannot form such complexes due to the lack of lone pairs needed for coordination.
Tips
A common mistake is assuming methane can form coordinate bonds like water. Methane is neutral and lacks lone pairs.
Sources
- 6.2: What is a Complex Ion? - Chemistry LibreTexts - chem.libretexts.org
- Module 3 Transition elements - Secondary Science 4 All - secondaryscience4all.wordpress.com
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