enEnglishguગુજરાતી
NEET · Chemistry · STD 12 - 5. Co-ordination chemistry
Which among the following is a paramagnetic complex? \((\)At. No. \(Mo = 42, Pt = 78)\)
- A \([Co(NH_3)_6]^{3+}\)
- B \([Pt(en)Cl_2]\)
- C \([CoBr_4]^{2-}\)
- D \(Mo(CO)_6\)
Answer & Solution
Correct Answer
(C) \([CoBr_4]^{2-}\)
Step-by-step Solution
Detailed explanation
Magnetic Moments (spin only)- \(\sqrt{n(n+2)}\) where \(n=\) number of unpaired electron.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic.NEET 2013 Hard
- Given below are two statements : one is labelled as
Assertion (A) and the other is labelled as Reason (R).
Assertion (A) :
undergoes \(\text S _{\text {N}} 2\) reaction faster than
Reason (R) : Iodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below :NEET 2025 Medium - An alkene \(A\) on reaction with \(\mathrm{O}_{3}\) and \(\mathrm{Zn}-\mathrm{H}_{2} \mathrm{O}\) gives propanone and ethanal in equimolar ratio. Addition of \(HCl\) to alkene \(A\) gives \(B\) as the major product. The structure of product \(B\) is:NEET 2019 Hard
- The correct order of decreasing acidity of the following aliphatic acids is :-NEET 2025 Easy
- The major product Z formed in the following sequence of reactions is :
\(C _2 H _6 \xrightarrow[\text { UV light }]{ Cl _2} X \xrightarrow{ NH _3} Y \xrightarrow[\text { (monochlorinated product) }]{\text { (i) } NaNO _2 / HCl \text { (ii) } H _2 O } Z\)NEET 2026 Medium - Although +3 oxidation state is most common in lanthanoids, cerium still shows +4 oxidation state because :NEET 2026 Easy
More PYQs from NEET
- Which of the following is not a connective tissue?NEET 2022 Easy
- Which of the following is a free radical substitution reaction?NEET 2020 Medium
- Electrons of mass \(m\) with de-Broglie wavelength \(\lambda\) fall on the target in an \(X-\)ray tube. The cutoff wavelength \((\lambda_0)\) of the emitted \(X-\) ray isNEET 2016 Medium
- A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises to a height of 10 m. The impulse imparted to the ball during its collision with the ground is ....Take \((g =9.8 m / s ^2)\)NEET 2025 Medium
- Histones are enriched with -NEET 2025 Easy
- Which structure(s) of proteins remains(s) intact during denaturation process ?NEET 2019 Medium