1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co3+ is
A
[Co(H2O)6]3+, [Co(en)3]3+, [Co(NH3)6]3+
B
[Co(H2O)6]3+, [Co(NH3)6]3+, [Co(en)3]3+
C
[Co(NH3)6]3+, [Co(en)3]3+, [Co(H2O)6]3+
D
[Co(en)3]3+, [Co(NH3)6]3+, [Co(H2O)6]3+
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
The reason for greater range of oxidation states in actinoids is attributed to
A
actinoid contraction
B
5$$f$$, 6d and 7s levels having comparable energies
C
4$$f$$ and 5d levels being close in energies
D
the radioactive nature of actinoids.
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
An example of a sigma bonded organometallic compound is
A
Grignard's reagent
B
ferrocene
C
cobaltocene
D
ruthenocene.
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
HgCl2 and I2 both when dissolved in water containing I$$-$$ ions, the pair of species formed is
A
HgI2, I$$-$$
B
HgI$$_4^{2 - }$$, I$$_3^{ - }$$
C
Hg2I2, I$$-$$
D
HgI2, I$$_3^{ - }$$