1
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The following statements concern elements in the periodic table. Which of the following is true ?
A
All the elements in Group 17 are gases.
B
The Group 13 elements are all metals.
C
Elements of Group 16 have lower ionization enthalpy values compared to those of Group 15 in the corresponding periods.
D
For Group 15 elements, the stability of + 5 oxidation state increases down the group.
2
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
The ionic radii (in Å) of N3–, O2– and F are respectively:
A
1.36, 1.71 and 1.40
B
1.71, 1.40 and 1.36
C
1.71, 1.36 and 1.40
D
1.36, 1.40 and 1.71
3
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?
A
S < Se < Ca < Ba < Ar
B
Ba < Ca < Se < S < Ar
C
Ca < Ba < S < Se < Ar
D
Ca < S < Ba < Se < Ar
4
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
The first ionization potential of Na is 5.1 eV. The value of electron gain enthalpy of Na+ will be:
A
– 5.1 eV
B
–10.2 eV
C
+ 2.55 eV
D
– 2.55 eV
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