Grade 12IIT JEE Entrance Exam

order of deactivating of halogen in eas to check acidity of para halo phenol

ravi kumar

10 Years agoGrade 12

1 Answer

Himanshu

10 Years ago

Order of deactivations is fluorine is most deactivating group followed by chlorine,bromine,and iodine ..greater I the -I effect greater is the deactivating nature

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

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Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

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order of deactivating of halogen in eas to check acidity of para halo phenol

ravi kumar

1 Answer

Himanshu

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Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

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