1
JEE Main 2023 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

LIST I
Coordination Complex
LIST II
Number of unpaired electrons
A. $$\left[\mathrm{Cr}(\mathrm{CN})_{6}\right]^{3-}$$ I. 0
B. $$\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$$ II. 3
C. $$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$$ III. 2
D. $$\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$$ IV. 4

Choose the correct answer from the options given below:

A
A-IV, B-III, C-II, D-I
B
A-II, B-I, C-IV, D-III
C
A-II, B-IV, C-I, D-III
D
A-III, B-IV, C-I, D-II
2
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following complex is octahedral, diamagnetic and the most stable?

A
$$\mathrm{Na}_{3}\left[\mathrm{CoCl}_{6}\right]$$
B
$$\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}$$
C
$$\mathrm{K}_{3}\left[\mathrm{Co}(\mathrm{CN})_{6}\right]$$
D
$$\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{2}$$
3
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of spin only magnetic moments for the following complex ions is

A
$$\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}<\left[\mathrm{CoF}_{6}\right]^{3-}<\left[\mathrm{MnBr}_{4}\right]^{2-}<\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{3-}$$
B
$$\left[\mathrm{MnBr}_{4}\right]^{2-}<\left[\mathrm{CoF}_{6}\right]^{3-}<\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}<\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{3-}$$
C
$$\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}<\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{3-}<\left[\mathrm{CoF}_{6}\right]^{3-}<\left[\mathrm{MnBr}_{4}\right]^{2-}$$
D
$$\left[\mathrm{CoF}_{6}\right]^{3-}<\left[\mathrm{MnBr}_{4}\right]^{2-}<\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}<\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{3-}$$
4
JEE Main 2023 (Online) 6th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The IUPAC name of $$\mathrm{K}_{3}\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]$$ is:-

A
Potassium tris(oxalato)cobalt(III)
B
Potassium tris(oxalato)cobaltate(III)
C
Potassium trioxalatocobaltate(III)
D
Potassium trioxalatocobalt(III)
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12