Discuss the trends in atomic and physical properties of elements of Group 2. Write any four uses of CaCO3. Write any four uses of LiAlH4.
Understand the Problem
The question is asking for a discussion on trends in atomic and physical properties of Group 2 elements, the uses of CaCO3, and four uses of LiAlH4.
Answer
Increasing atomic radius and metallic character in Group 2. CaCO3: antacid, food additive, cleaning, building. LiAlH4: reducing agent, hydrogen storage, catalyst, fuel cells.
Group 2 elements have increasing atomic radius and metallic character, and decreasing ionization energy and electronegativity down the group. Uses of CaCO3: antacid, food additive, cleaning agent, and building material. Uses of LiAlH4: reducing agent, hydrogen storage, polymerization catalyst, and in fuel cells.
Answer for screen readers
Group 2 elements have increasing atomic radius and metallic character, and decreasing ionization energy and electronegativity down the group. Uses of CaCO3: antacid, food additive, cleaning agent, and building material. Uses of LiAlH4: reducing agent, hydrogen storage, polymerization catalyst, and in fuel cells.
More Information
Group 2 elements like beryllium, magnesium, and calcium show distinct trends in their atomic and physical properties due to increasing atomic size. Calcium carbonate is versatile with extensive applications, whereas LiAlH4 is known for its effective reducing properties in organic chemistry.
Tips
A common mistake is confusing the trends of Group 2 with those of Group 1 elements. Ensure to differentiate between the two groups' properties.
Sources
- Atomic and physical properties of Periodic Table Group 2 - Chemguide - chemguide.co.uk
- Calcium Carbonate | CaCO3 | CID 10112 - PubChem - pubchem.ncbi.nlm.nih.gov
- Lithium Aluminium Hydride- LiAlH4 - BYJU'S - byjus.com
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