Q. The set representing the correct order of ionic radius is ?
(1) $\mathrm{Li}^{+}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}>\mathrm{Be}^{2+}$
(2) $\mathrm{Mg}^{2+}>\mathrm{Be}^{2+}>\mathrm{Li}^{+}>\mathrm{Na}^{+}$
(3) $\mathrm{Li}^{+}>\mathrm{Be}^{2+}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}$
(4) $\mathrm{Na}^{+}>\mathrm{Li}^{+}>\mathrm{Mg}^{2+}>\mathrm{Be}^{2+}$
[AIEEE 2009]
Q. The correct order of electron gain enthalpy with negative sign of F, Cl, Br and I, having atomic number 9, 17, 35 and 53 respectively, is ?
(1) I > Br > Cl > F
(2) F > Cl > Br > I
(3) Cl > F > Br > I
(4) Br > Cl > I > F
[AIEEE 2011]
Q. The increasing order of the ionic radii of the given isoelectronic species is ?
(1) $\mathrm{K}^{+}, \mathrm{S}^{2-}, \mathrm{Ca}^{2+}, \mathrm{Cl}^{-}$
(2) $\mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{K}^{+}, \mathrm{S}^{2-}$
(3) $\mathrm{S}^{2-}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{K}^{+}$
(4) $\mathrm{Ca}^{2+}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{S}^{2-}$
[AIEEE 2012]
Q. Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar ?
(1) Ca < S < Ba < Se < Ar
(2) S < Se < Ca < Ba < Ar
(3) Ba < Ca < Se < S < Ar
(4) Ca < Ba S < Se < Ar
[JEE-Main 2013]
Q. The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of $\mathrm{Na}^{+}$ will be?
(1) – 2.55 eV
(2) – 5.1 eV
(3) – 10.2 eV
(4) + 2.55 eV
[JEE-Main 2013]
Q. Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to:
(1) Smaller size of chlorine atom
(2) Bigger size of 2p orbital of fluorine
(3) High ionization enthalpy ol fluorine
(4) Smaller size of fluorine atom
[JEE-MAIN 2013 (OnLine)]
Q. The order of increasing sizes of atomic radii among the elements O, S, Se and As is ?
(1) As < S < O < Se
(2) O < S < As < Se
(3) Se < S < As < O
(4) O < S < Se < As
[JEE-MAIN 2013 (OnLine)]
Q. Which is the correct order of second ionization potential of C, N, O and F in the following?
(1) O > F > N > C
(2) O > N > F > C
(3) C > N > O > F
(4) F > O > N > C
[JEE-MAIN 2013 (OnLine)]
Q. Which of the following series correctly represents relations between the elements from X to Y ?
[JEE-MAIN 2014 (OnLine)]
[JEE-MAIN 2014 (OnLine)]
Q. Which of the following atoms has the highest first ionization energy ?
(1) Sc
(2) Rb
(3) Na
(4) K
[JEE-MAIN 2016]
Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...
Sol. (1) Due to poor shielding of d-electrons in Sc, $Z_{\mathrm{eff}}$ of Sc becomes more so that ionisation energy of Sc is more than Na, K and Rb.
Q. The group having isoelectronic species is :-
(1) $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}$
(2) $\mathrm{O}^{-}, \mathrm{F}^{-}, \mathrm{Na}, \mathrm{Mg}^{+}$
(3) $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}, \mathrm{Mg}^{2+}$
(4) $\mathrm{O}^{-}, \mathrm{F}^{-}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}$
[JEE-MAIN 2017]
Nice Questions
Very best website for the students who want to clear jee……
very helpful website for jee aspirants
Thankx.. best of luck all jee @spirins who r going to be …🙌
EUNRUNIM69LCQ]Y WE8 8JNXD]
27 IU PU
5’PH,67H
HK68
6
HKGW
KKLG
E5K
Very helpful wabsite
I am glad
Thank you so much😀
Sir, please upload some more questions.
thanks for your help
Very Helpful
Thanks
thank you so much
Good for preparation
very nice
Good questions….but more high level based questions should be uploaded for iit jee advanced level preparation.
YA WHY NOTY
nice thanks saral
please give me more question to solve for iit preperation
For Complete study material, Video Lectures and Mind Map Download eSaral APP: https://esaral.com/app .
Yep
nice
More question!! otherwise really good!
Can you please make question more upto up
Answer of fifth question is incorrect
Good and use ful
I want more questions and it’s helpful anyway thanks
It’s helpful
More questions
keep posting ..this is a great help
We need too many questions
Needed more questions
no like
It helped me alot
Thanks dude
Helped me alot thanq
It really helped me 😁☺️☺️
Awesome I strong my concepts I would correct all questions ok thanks a lot.
In question number 5
Answer will be
B
Please reply
Good🙏😀😀
Thanks… Upload till 2019 questions..
Thank you
I became strong in concept
Upload more questions please
Very nice
Want more questions anyways thanks so much
If i scored full then how is my base strong in this topic. Also update the ques and bring ques of diff concepts
Good questions
Nice , update the questions pls
Nice
Thank you, still more questions pls
Thank you
yeah helpful and useful
Thanks
Help full questions to all ,thanks
Bring some other questions asked in jee mains
I want more questions
good questions…. pls upload more
Help ful needs more question for self practice
Good and useful
Pls upload more questions
very nice questions
Really good…keep posting for us
Thanks for these questions and add more good questions
But still really helpful thankyou so much for your efforts for us in free.😊
Good but it very short and each time the same concept is repeating .you should add more questions with different concepts .
Need more questions …
Salute to your help
2019 and 2020 questions
Thanks
These were very simple ,please select good questions if they come
Need more questions but good
thank you so much
Good questions
Thank you
Thank you very much for your help
Thank u sooo much
Hii