1
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The third ionization enthalpy is minimum for :
A
Ni
B
Co
C
Mn
D
Fe
2
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The first ionization energy (in kJ/mol) of Na, Mg, Al and Si respectively, are :
A
496, 577, 786, 737
B
496, 737, 577, 786
C
786, 737, 577, 496
D
496, 577, 737, 786
3
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Within each pair of elements F & Cl, S & Se, and Li & Na, respectively, the elements that release more energy upon and electron gain are :
A
F, S and Li
B
Cl, Se and Na
C
Cl, S and Li
D
F, Se and Na
4
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The atomic radius of Ag is closed to :
A
Au
B
Cu
C
Hg
D
Ni
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