Messages posted by RISHABH BAJPAI

Both give the same answer 1

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Hybridisation is a purely hypothetical concept which means intermixing of orbitals to form degenerate orbitals (degenerate means having same energy) while bonding...The so hybrid orbitals formed have lower energy than the atomic orbitals and hence higher stability..

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Let the consecutive terms be "q" and "q+1".

as per given:

{(n(n+1)/2) - (2q +1)}/(n-2) =105/4

i.e. 2n^2 - 103n - 8q + 206 =0

-8q+206 will be even...so n must be even...

let n=2r..

now q={4r^2 + 103(1-r)}/4

since q is integer so (1-r) must be divisible by 4....

so let r=1+4t

since n=2r..

n=2+8t

q=16t^2 - 95t + 1

1<=q<n

1<=16t^2 - 95t + 1 < 8t+2

i.e t=6

so n=50 and

q=7

therefore removed nos. are 7 and 8

Let the consecutive terms be "l" and "l+1".as per given: {(n(n+1)/2) - (2l +1)}/(n-2) =105/4i.e. 2n^2 - 103n - 8l + 206 =0 -8l+206 will be even...so n must be even...let n=2r..now l={4r^2 + 103(1-r)}/4since l is integer so (1-r) must be divisible by 4....so let r=1+4tsince n=2r..n=2+8tl=16t^2 - 95t + 11<=l

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Carbon does form 4 bonds with carbons in diamond!!!

chloral hydrate stable because of Hydrogen Bonding....

with dil. backward rxn. will start...

backward rxn will start in dat case....

this is due to hydrogen bonding!!!!

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Hyperconjugation that is no bond resonance....just like double bonds in conjugation consider the allylic Carbons having H...there is overlap in these orbital creating extra stability...Greater the of hyperconjugation more stable the alkene....To find the no. of C-H hyperconjugated bonds find the no. of ALLYLIC HYDROGENS

Molecualarity refers to the number of molecules colliding that react effectively to form the product.For a complex reaction the molecularity is decided by the SLOWEST STEP

well.....there is a big problem with NEWTON's LAW OF GRAVITY....IT ASSUMES ALL THE BODIES TO HAVE THEIR MASS CONCENTRATED AT THEIR CENTER WHICH IS NOT SO....THUS NEWTONS LAW IS VALID FOR POINT OBJECTS...THUS FOR VERY VERY LARGE DISTANCES AS SUN AND EARTH THESE APPEAR AS POINT OBJECTS FROM EITHER FRAME OF REFERENCE OF EARTH OR SUN..BUT IF THE DISTANCE IS AS LESS AS U SAY THEY CANNOT BE CONSIDERED AS POINT OBJECTS AND THUS NEWTONS FORMULA FAILS.....@PARTH CHHAPARWAL: I WOULD SUGGEST YOU NOT TO JUST KNOW THE FORMULA BUT GO DEEP IN CONCEPTS..RATE PLS IF SATISFIED!!

the focus of a plane mirror is at infinity!!!

DISPLACEMENT is a VECTOR QUANTITY not scalar so the -ve sign refers to the direction....However its distance that is scalar quantity which cannot be -ve....but DISPLACEMENT BEING VECTOR CAN BE NEGATIVE JUST LIKE VELOCITY....FOR ALL THOSE WHO ARE SAYING DISPLACEMENT TO BE SCALAR...GUYS REVISE YOUR CONCEPTS!!!

Carboxylic acids are more acidic than Phenol...this is attributed to the greater stability of the carboylate ion as compared to the phenoxide ion....(acidity can be judged by the stability of conjugate base formed after removing H+)...In carboylate ion the -ve charge is dispersed on 2 more electro-ve Oxygen atoms as compared to phenoxide in which -ve charge is distributed on 1 electro-ve O and lesser electro-ve carbons...

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