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]
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