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1
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct order of electron affinity is :
A
F > Cl > O
B
F > O > Cl
C
Cl > F > O
D
O > F > Cl
2
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For Na+, Mg2+, F- and O2-; the correct order of increasing ionic radii is :
A
O2- < F- < Na+ < Mg2+
B
Na+ < Mg2+ < F- < O2-
C
Mg2+ < Na+ < F- < O2-
D
Mg2+ < O2- < Na+ < F-
3
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following is an oxide?
A
KO2
B
BaO2
C
SiO2
D
CsO2
4
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The electronic configuration with the highest ionization enthalpy is :
A
[Ne] 3s2 3p1
B
[Ne] 3s2 3p2
C
[Ne] 3s2 3p3
D
[Ar] 3d10 4s2 4p3
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