Friday, July 20, 2007

Ch 14 Compounds of Metals

My daughter has joined a residential college in A.P. Therefore she is appearing for Intermediate of A.P.. She is having the Chemistry books of Telugu Akademi, Arihant publications, and a book by O.P. Tandon, Bathla & Sons.

In the first year inter syllabus there are chapters on Alkali metals, alkali earth metals, Group III elements and Group IV elements. All these topics are relevant for IIT JEE. I see these topics in ICSE syllabus also. Actually, almost all the topics in the IIT JEE syllabus of inorganic chemistry are covered in the ICSE Class XI book. A good study of ICSE book by ICSE students, and intermediate books by intermediate students will be useful in their JEE attempt. Do not neglect your class XI classes and books. Study them carefully along with your IIT books/notes.

Properties of alkali metals ( Group IA elements) Lithium, Sodium, Potassium, Rubidium, Caesium and Francium. Francium is a radioactive substance or metal.

1. Valency shell configuration: one electron in the s orbital.
2. Density: increases gradually from lithium to Caesium. But between sodium and potassium, potassium is lighter than sodium. Why?
3. Melting points are low and they decrease in moving down from lithium to caesium.
Boiling point also decreases as we go down the group.

to be continued.

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