Messages posted by bigmouth

its just a coaching insti's opinion

u cant know about the pattern till the iits announce it

hi

i am going to write my jee in 2008(1st attempt)

i also really struggle wit chem (in my coaching i get 60%-65% in math and phy but about 20 in chem)

however recently i tried a new approach and my marks really improved

basically all you have to do is know the relative sizes and electronegativities of the elements

then use polar effects its very effective

here are some important points

when sizes of anion & cation are similar, high stability, mp, etc

when charge in not localised high stability ex I- more stable than Cl-

a highly polar bond is most likely to brake

and so on

use the same principles 4 inorgg

is there a good book or source that has lots of problems on polar effects (I,R,M effects, guessing stability,acidity,etc)

@ INR 1,995/-