4 - d and f block elements Questions Answers

what is the concept of finding different oxidation no. of f block elements.

Asked By: SHASHANK GUPTA
is this question helpfull: 11 1 submit your answer
Joshi sir comment

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. 

Trick to remember al elements of inner transition
Asked By: IJLAL
is this question helpfull: 10 4 submit your answer
Joshi sir comment

remember these elements by dividing these two lines in the pairs of 7-7

Lanthanide contraction
Asked By: MOHD NASEEM
is this question helpfull: 11 3 submit your answer
Joshi sir comment

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 

tricks to solve ques of d block elements
Asked By: MOHD NASEEM
is this question helpfull: 7 2 submit your answer
Joshi sir comment

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 .

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