why lithium reacts less vigarously than sodium ?

3 years ago

Share

Answers : (4)

                                        

Dohhh !! check the reactivity series


http://en.wikipedia.org/wiki/Reactivity_series


Elements at the top are hyper reactive and this decreases downwards..


sodium comes above lithium so likewise it reacts more vigorously


 


 

3 years ago
                                        

Lithium is a small molecule compared to sodium.... the attraction between the outermost electron and the nucleus in Li is more than the attraction between outermost electron and nuclei of Na... when a small amount of energy is supplied to Sodium, the outermost electron jumps out and enables Na to take part in Chemical reactions... while in the case of Li more amount of energy is to be supplied to overcome the attraction between the outermost electron and the nucleus... Hence Na reacts vigorously when compared to Li..... PLZ approve this answer!!!!!

3 years ago
                                        

but energy will be released on rection with water rt

3 years ago
                                        

U will learn in higher classes that energy is inversely propotional to stability.....


consider the reaction:


REACTANTS ----> PRODUCTS


where enormous amount of energy is lost in the form of heat... the energy of the products is less than the energy of the reactants (heat is lost)... hence the products is stable when compared to the reactants... Na has higher energy than Li... it is less stable compare to Li... it reacts with water vigorously and enormous amount of heat is lost during the process and forms NaOH which is stable... Li also reacts with water vigorously but since its already stable (has less energy) it reacts less vigorusly than water....

3 years ago

Post Your Answer

More Questions On IIT JEE Entrance Exam

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
Will IITs and/or ISM carry out spot counselling in 2014.
 
 
Spot counselling is for NITs, IIITs 7 other institutes.IITs & ISM don not participate in Spot Counselling. Thanks & Regards Aziz Alam IIT Roorkee askIITians
  img
Aziz Alam one month ago
i got 112 i jee-mains. what college can i get?
 
 
The link below is IIT JEE Main Branch and College Predictor.You can use it to get the answer to your query. http://www.askiitians.com/iit-jee/main/college-branch-predictor.html Thanks...
  img
Aziz Alam one month ago
i got 416 haryana homestate obc category rank and does not get any branch in nit kurukshetra in 1 round.Will i get any branch in 2 round in nit kurukshetra.I got 1600 rank in state haryana.
 
 
You can have a look at previous year data regarding NIT Kurushetra http://www.askiitians.com/iit-jee/main/counselling/nit-kurushetra.html Thanks & Regards Aziz Alam IIT Roorkee...
  img
Aziz Alam one month ago
what is the length of second pendulum on at the pole of earth?
 
 
The value of g at poles is 9.83 m/s(square). So we use the formula of time period of the simple pendulum where t=1 sec. as it is a seconds pendulum. We can calculate the length of the...
  img
Apoorva Arora 2 months ago
sir ,i have scored 263 state rank in odisha .can i get in this SCB Medical College, Cuttack
 
 
Dear student, Please specify from which category do you belong based on which we can tell you if you would be in a chance to get through in SCB College. Regards Sumit
  img
Sumit Majumdar 2 months ago
View all Questions »