How to memorise mendeleev's table? I need it to do qiestions based on oxides and hydrides.

Dear Student,

there is no need to memorize the complete periodic table. You just need to remember few groups like chalcogens, halogens etc. You need to remember some of the important elements which has been covered in your syllabus and their specific properties and their periodicity along peiods and groups.

about oxides and hydrides in mendeleev's periodic table
1. Two general formulae; one for oxides and second for hydrides; have been given for the elements of each group in the periodic table. For example: R2O for oxides and RH for hydrides, of the elements; of 1st group.

2. Using the given general formulae; the formula of oxides and hydrides can be written for the elements of each group. For example; hydrogen, sodium, potassium, etc. belong to the first group. The general formula of oxides for the elements of 1st group is R2O. Accordingly they form H2O, Na2O, K2O, etc.

for questions based on oxides and hydrides u can check your book.

 

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