1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
A
$$NO < {O_2}^ - < {C_2}^{2 - } < He_2^ + $$
B
$${O_2}^ - < NO < {C_2}^{2 - } < He_2^ + $$
C
$${C_2}^{2 - } < He_2^ + < {O_2}^ - < NO$$
D
$$He_2^ + < {O_2}^ - < NO < {C_2}^{2 - }$$
2
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
The correct order of C $$-$$ O bond length among CO, CO$${_3^{2 - }}$$, CO2 is
A
CO < CO$${_3^{2 - }}$$ < CO2
B
CO$${_3^{2 - }}$$ < CO2 < CO
C
CO < CO2 < CO$${_3^{2 - }}$$
D
CO2 < CO$${_3^{2 - }}$$ < CO
3
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
In which of the following pairs, the two species are isostructural?
A
SO$${_3^{2 - }}$$ and NO$${_3^{ - }}$$
B
BF3 and NF3
C
BrO$${_3^{ - }}$$ and XeO3
D
SF4 and XeF4
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The electronegativity difference berween N and F is greater than that between N and H yet the dipole moment of NH3 (1.5D) is larger than that of NF3 (0.2 D). This is because
A
in NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3 these are in the same direction
B
in NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction
C
in NH3 the atomic dipole and bond dipole are in the same direction whereas in NF3 these are in opposite directions
D
in NH3 as well as in NF3 the atomic dipole and bond dipole are in opposite directions.
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