hydrogen has three isotopes: Protium ( 1 proton) , Deuterium ( 1 proton and 1 neutron), and tritium (1 proton and 2 neutrons).


which of these isotopes is most electronegative and why?

3 years ago


Answers : (2)


Dear Janani,

Protium would have the highest electronegativity value followed by Deutrium & then finally tritium ..

The electronegativity decreases in the order..



This is because electronegativity is the tendency to attract the shared pair of electrons towards a particular atom..Now for Protium(1H1) it has one proton(+ve charged) & so it could attract the electrons effectively towards itself but in deutrium there is an added neutral charge in the form of a neutron which increases the size thus reduces the electronegativity tendency of the deutrium atom & similarly for tritium..!!


If you still have any doubts then please ask them all so as to clarify them..!!

If you loved the answer then please do not forget to approve it by clicking on "Yes" below..!!

3 years ago

as we increase the no. of electrons in s orbital, we have a strong shielding from s orbital..... so net effective charge on the adjacent atom's electrons decreses....hence its electronegativity decreses.....

Thus, Protium has largest electro-vetivity...... Smile

3 years ago

Post Your Answer

More Questions On Organic Chemistry

Ask Experts

Have any Question? Ask Experts
Post Question
Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details
Hi experts could you notify me on the BITSAT 2015 announcement and also suggest me which book to refer for organic chemistry – OP Tandon or RS Agarwal.
Important Notifications for BITSAT! BITSAT date of Examination - 14th May to 1st June 2014 BITSAT 2014 Notification released. Online application has begun. To apply online for BITSAT go to...
Harishwar 14 days ago
Thanks for the reply. Again confused. Are you replying about 2014 announcement?
Vishuwaesh 13 days ago
convert acetic acid to acetylene
Firsrt convert Acetic Acid to methane CH3COOH + NaOH (CaO) -------> CH4 + By products In this reaction NaOH first converts acetic acid to its salt and then CaO decarboxylates it to...
Harishwar one month ago
how to read organic chemistry and please tell how to remember organic chemistry
Organic chemistry is simplest part of chemistry, but most of the students will find it very difficult because they do not understand basics . If one understands basics then it is very easy...
Ramreddy 3 days ago
See, first of all you must have a good knowledge of all the reagents i.e what is the effect of those reagents and in what conditions they react and what products are formed. then you just...
Suraj Prasad 3 days ago
primitive vectors and primitive cell volume for a bcc lattice.
Dear student, A Bravais lattice is defined as an infinite array of discrete points generated by a set of discrete translation vectors given by: Here n i are integers and a i are known as the...
Sumit Majumdar 3 months ago
3 millimoles of k2cr2o7 reacts completely with 4.5 millimoles of X^n+ to give Xo3^- and cr^3+. the value of n is?
6e- +Cr2O7^2- -----2Cr+3 X^n+ -----Xo3- +5-n now 3*6*1000=(5-n)*4.5*1000 n=1 because milliequivalent is mole*valency factor*1000 the value of n s equal to1
Sunil Kumar FP 3 months ago
In Thomson experiment the electron is deflected downwards when only magnetic fied is applied (This deflection need to be left or right side). Why this happens? . But there is a logic/reason...
motion of achrged particle in presence of magnetic field If a positively charged particle moves with an initial uniform velocity in a direction perpendicular to a uniform magnetic field, B,...
Sunil Kumar FP 9 days ago
I can’t understand wich cicle you mean ? & Can you give the writings in the image as written becz I cant able to read from this image . and can you tll me how to post image when Im...
Vineeth 9 days ago
View all Questions »