1Q) Acidic hydrolysis will be least in:-
a) Ac-Ph(para)OCH3
b) Ac-Ph(para)NO2
c) Ac-Ph
d) Ac-Ph(meta)NO2
Though it is difficult to give the structural formula, I tried my level best to represent them. Please answer.................
17 Answers
1thanks for ur answer.but my doubt is that the why is the difference between 1st & 2nd shells is different from the energy difference between 2nd & 3rd shells and so on.........
11thanks 4 ur answer.Is it not true dat radium emits light when electrons excite and return to ground state?just clear this doubt for me.
49radioactive elements do not radiate energy according to stability or configuration of electron arrangement
but instead depends upon the muclear arrangement!
read a bit of radioactivity from any book and u will know! [1]
1i have a small doubt regarding radioactive elements.we know dat energy cannot be lost continuosly by any atom.then how does radium emit radiation continously?
71Listen,
Suppose an atom is at Infinity where it's energy is zero. So if you are bringing it closer to the nucleus you are doing negative work it. (You'll read this in Physics)
So the closest you can take the electron upto, the minimum it's energy would be. That is the reason that the electron in Ground State (The closest possible distance from nucleus) has minimum energy.
And as Said Energy varies Inversely as square of distance which follows from Bohr;'s Idea too.
That's why Energy Gap goes on decreasing.
AS for Example,
Say for example, You are to pull a chain of 100 people holding their hands with each other. So if you pull by your maximum effort, the most impact will be on the 1st one and he'll lean maximum and then the subsequent. After 10-15 people, your energy will become insignificant to do them anything and they will stand more or less straight. So we can say that the Energey difference decreased as the Difference between the st and 2nd Person leaning will not not be same as that between 20th and 21st or 99th and 100th.
[Here Assume --> Yourself -> Nucleus
People -> Electrons
Degree of leaning -> Energy Difference ]
So, Energy gap decreases as we approach to higher orbit.
1arre akhil .....ION pae jo charge hota hai wahi toh free charge kehlata hai...i don't understand what more you want to ask
1i have a small doubt regarding energy states.my doubt is that why does the difference in energy levels decreases as we go away from the nucleus?
1@soumyadip
with potassium chloride:
[Cu(H2O)6] + 4KCl → [CuCl4]2- + 6H2O
clear solution
with potassium flouride:
CuSO4 + 2KF → CuF2 + K2SO4
ppt
1looks like this has become a thread for posting chemistry doubts....:D
@vasu
you are totally right that 'g' and 'h' subshells are also present but it is not seen anywhere in periodic table because until now no such element has been discovered(ie an element with such a high atomic no) which contains sufficient electrons to reach upto 'g' or 'h' subshell
the highest atmoic no element is ununoctium with configuration(outer configuration):-
5f146d107s27p6
and if you see the order of filling of orbitals ....5g orbital will be filled after 7p orbital but uuo(A=118) has electrons sufficient only to fill upto 7p orbital
SO IT WILL REQUIRE DISCOVERY OF ONLY ONE MORE ELEMENT
TO COMPLETE YOUR WISH(ie to at least fill g orbital )
1Hi, dis is Soumyadip, IITJEE 2011 aspirant...
I have the following doubts in coordination chemistry:-
1) Aqueous solution of copper sulphate soln( blue in colour) gives (a) green ppt with aqueous potassium flouride and (b) a bright green soln with aqueous potassium chloride. Explain these experimental results.
1although the sub-shells like "g and h" are also available, why dnt we use them in the electronic configuration?
49edit: force is inversely proportional to the square of distance!
1@sweety.....it takes less and less effort to remove the electron fro the outermost shess... due to reduction in the electrostatic attraction between the nucleas and the electron...
Force is inversely proportional to the distance