1
JEE Advanced 2020 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
Change Language
Choose the correct statement(s) among the following :
A
[FeCl4]$$-$$ has tetrahedral geometry.
B
[Co(en)(NH3)2Cl2]+ has 2 geometrical isomers.
C
[FeCl4]$$-$$ has higher spin-only magnetic moment than [Co(en)(NH3)2Cl2]+.
D
The cobalt ion in [Co(en)(NH3)2Cl2]+ has sp3d2 hybridisation.
2
JEE Advanced 2018 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
The correct option(s) regarding the complex

$${\left[ {Co\left( {en} \right){{\left( {N{H_3}} \right)}_3}\left( {{H_2}O} \right)} \right]^{3 + }}\,\,$$ $$\left( {en = {H_2}NC{H_2}C{H_2}N{H_2}} \right)$$ is (are)
A
It has two geometrical isomers
B
It will have three geometrical isomers if bidentate 'en' is replaced by two cyanide ligands
C
It is paramagnetic
D
It absorbs light at longer wavelength as compared to

$${\left[ {Co\left( {en} \right){{\left( {N{H_3}} \right)}_4}} \right]^{3 + }}$$
3
JEE Advanced 2018 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
The correct statement(s) regarding the binary transition metal carbonyl compounds is(are) (Atomic numbers : $$Fe = 26,Ni = 28$$)
A
Total number of valence shell electrons at metal center in $$Fe{\left( {CO} \right)_5}\,\,$$ or $$Ni{\left( {CO} \right)_4}$$ is $$16$$
B
These are predominantly low spin in nature
C
Metal-carbon bond strengthens when the oxidation state of the metal is lowered.
D
The carbonyl $$C-O$$ bond weakens when the oxidation state of the metal is increased
4
JEE Advanced 2017 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
Addition of excess aqueous ammonia to a pink colored aqueous solution of $$MC{l_2},6{H_2}O\left( X \right)$$ and $$N{H_4}Cl$$ gives an octahedral complex $$Y$$ in the presence of air. In aqueous solution, complex $$Y$$ behaves as $$1:3$$ electrolyte. The reaction of $$X$$ with excess $$HCl$$ at room temperature results in the formation of a blue colored complex $$Z.$$ The calculated spin only magnetic moment of $$X$$ and $$Z$$ is $$3.87$$ $$B.M.,$$ whereas it is zero for complex $$Y.$$ Among the following options, which statement(s) is (are) correct?
A
Addition of silver nitrate to $$Y$$ gives only two equivalents of silver chloride
B
The hybridization of the central metal ion in $$Y$$ is $${d^2}s{p^3}$$
C
$$Z$$ is a tetrahedral complex
D
When $$X$$ and $$Z$$ are in equilibrium at $${0^ \circ }C,$$ the color of the solution is pink
JEE Advanced Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12