- Organic Chemistry
- Aldehydes and Ketones
- Alkyl Halides, Alcohols and ethers
- Amines and other nitrogen compounds
- Aromatic Chemistry
- Carbohydrates, Amino acids, protein, Vitamin and Fat
- Carboxylic acids and its derivatives
- Chemistry in daily life
- General Mechanism in organic compounds
- Hydrocarbons
- Nomenclature and isomerism
4 - d and f block elements Questions Answers
what is the concept of finding different oxidation no. of f block elements.
Different oxidation no. are shown by f group elements and it is the property of element so there is no definite rule for getting these ox. no. A general oxidation no. for a family can be understand but if element is showing more oxidation no. then you should remember it by remembering compounds in these oxidation no.
remember these elements by dividing these two lines in the pairs of 7-7
Lanthanide contraction is based on the poor shilding effect of f orbital electrons. Due to this unexpected contraction in size on moving down in a group occurs
Periodic properties do not follow the general trend in d block so there is no short cut
Read the complete lesson carefully in details and make a list for all the exceptions then try the objective questions with a book having no error. At the end of every 10 days revise these notes
At the next revison you will feel more comfort .