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1
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
Stability of the species Li2, $$Li_2^−$$ and $$Li_2^+$$ increases in the order of:
A
Li2 < $$Li_2^+$$ < $$Li_2^-$$
B
$$Li_2^+$$ < $$Li_2^-$$ < Li2
C
$$Li_2^-$$ <$$Li_2^+$$ < Li2
D
$$Li_2^-$$ < Li2 < $$Li_2^+$$
2
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
In which of the following pairs the two species are not isostructural ?
A
$$CO_3^{2-}$$ and $$NO_3^-$$
B
$$PCl_4^{+}$$ and $$SiCl_4$$
C
PF5 and BrF5
D
$$AlF_6^-$$ and $$SF_6$$
3
AIEEE 2011
MCQ (Single Correct Answer)
+4
-1
Among the following the maximum covalent character is shown by the compound :
A
SnCl2
B
AlCl3
C
MgCl2
D
FeCl2
4
AIEEE 2011
MCQ (Single Correct Answer)
+4
-1
The hybridization of orbitals of N atom in $$NO_3^-$$, $$NO_2^+$$ and $$NH_4^+$$ are respectively :
A
sp , sp2, sp3
B
sp2, sp , sp3
C
sp , sp3, sp2
D
sp2, sp3, sp
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