1
IIT-JEE 2005 Screening
MCQ (Single Correct Answer)
+2
-0.5
Which species has the maximum number of lone pair of electrons on the central atom?
A
[ClO3]-
B
XeF4
C
SF4
D
[I3]-
2
IIT-JEE 2004 Screening
MCQ (Single Correct Answer)
+2
-0.5
According to molecular orbital theory which of the following statement about the magnetic character and bond order is correct regarding $$O_2^+$$
A
Paramagnetic and Bond order < O2
B
Paramagnetic and Bond order > O2
C
Diamagnetic and Bond order < O2
D
Diamagnetic and Bond order > O2
3
IIT-JEE 2003 Screening
MCQ (Single Correct Answer)
+2
-0.5
Which of the following are isoelectronic and isostructural?
$$NO_3^-$$, $$CO_3^{2-}$$, $$ClO_3^-$$, SO3
A
$$NO_3^-$$, $$CO_3^{2-}$$
B
SO3, $$NO_3^-$$
C
$$ClO_3^-$$, $$CO_3^{2-}$$
D
$$CO_3^{2-}$$, SO3
4
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+2
-0.5
Specify the coordination geometry around and hybridisation of N and B atoms in a 1 : 1 complex of BF3 and NH3
A
N : tetrahedral, sp3; B : tetrahedral, sp3
B
N : pyramidal, sp3; B : pyramidal, sp3
C
N : pyramidal, sp3; B : planar, sp2
D
N : pyramidal, sp3; B : tetrahedral, sp3
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