1
IIT-JEE 1989
MCQ (Single Correct Answer)
+1
-0.25
The correct ground state electronic configuration of chromium atom is
A
[Ar] 3d5 4s1
B
[Ar] 3d4 4s2
C
[Ar] 3d6 4s0
D
[Ar] 4d5 4s1
2
IIT-JEE 1989
MCQ (Single Correct Answer)
+1
-0.25
Which one of the following is the smallest in size?
A
N3-
B
O2-
C
F-
D
Na+
3
IIT-JEE 1989
MCQ (More than One Correct Answer)
+1
-0.25
Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because
A
the hydration energy of sodium sulphate is more than its lattice energy
B
the lattice energy of barium sulphate is more than its hydration energy
C
the lattice energy has no role to play in solubility
D
the hydration energy of sodium sulphate is less than its lattice energy
4
IIT-JEE 1989
MCQ (Single Correct Answer)
+1
-0.25
The molecule which has zero dipole moment is:
A
CH2Cl2
B
BF3
C
NF3
D
ClO2
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