Which of the following is paramagnetic?
Which of the following is paramagnetic?
[CoBɣ]2-
Mo(Co)6
[Pt(en)Cl2]
[Co(NH3)6]3+
The Correct Option is A
Solution and Explanation
To determine which of the given complexes is paramagnetic, we need to examine the electronic configuration of the metal centers and the nature of the ligands. Paramagnetism arises from unpaired electrons in an atom, ion, or molecule.
Let's analyze each option:
[CoBɣ]2-: Assuming the ligand "Bγ" doesn't affect the oxidation state, cobalt is typically Co(II) here, which has an electronic configuration of 3d7. This means it has unpaired electrons, indicating paramagnetism.
Mo(CO)6: The Mo atom in Mo(CO)6 is in the zero oxidation state (Mo0), and carbonyl (CO) is a strong field ligand leading to pairing of electrons. Thus, it is diamagnetic.
[Pt(en)Cl2]: Platinum(II) typically has a low-spin d8 configuration with all electrons paired. Therefore, it is diamagnetic.
[Co(NH3)6]3+: The cobalt ion here is Co(III) with a d6 configuration in a low-spin state, which results in paired electrons, making it diamagnetic.
In conclusion, [CoBɣ]2- is paramagnetic due to the presence of unpaired electrons in the cobalt ion.
Top SRMJEEE Chemistry Questions
How many enolizable hydrogens are there in the compound 2-methylcyclohex-2- en -1 -one?
Following reaction can produce three products. The order of their amount is
When the valence d orbitals of the central metal ion in tetrahedral complex are split in energy levels in CFT, which orbitals are raised to higher energy?
Which of the following statement is true for aqueous solution of 0.1 M urea, 0.2 M glucose nad 0.3 M sucrose
The hybridization of nitrogen in diethyl amine is
Top SRMJEEE Chemical bonding and molecular structure Questions
- Which of the following species has the maximum bond order?
- If a bond breaks in such a way that both electrons remain with one fragment, the mechanism is called
- Select the substance which has only one Pi (π) bond in its molecule.
- The correct sequence which shows decreasing order of the ionic radii of the elements is
- The hybridization of NH3 and NO2-
Top SRMJEEE Questions
- Three charges -q, Q and -q are placed in a straight line maintaining equal distance from each other. What should be the ratio \(\frac{q}{Q}\) so that net electric potential of the system is zero?
- What can be said regarding a line if its slope is negative?
- An ideal diode presents a(n)______ when reversed-biased and a(n) __________ when forward-biased.
How many enolizable hydrogens are there in the compound 2-methylcyclohex-2- en -1 -one?
Following reaction can produce three products. The order of their amount is
Concepts Used:
Chemical Bonding and Molecular Structure
Such a group of atoms is called a molecule. Obviously, there must be some force that holds these constituent atoms together in the molecules. The attractive force which holds various constituents (atoms, ions, etc.) together in different chemical species is called a chemical bond.
Types of Chemical Bonds:
There are 4 types of chemical bonds which are formed by atoms or molecules to yield compounds.
- Ionic Bonds - Ionic bonding is a type of chemical bonding which involves a transfer of electrons from one atom or molecule to another.
- Covalent Bonds - Compounds that contain carbon commonly exhibit this type of chemical bonding.
- Hydrogen Bonds - It is a type of polar covalent bonding between oxygen and hydrogen wherein the hydrogen develops a partial positive charge
- Polar Bonds - In Polar Covalent chemical bonding, electrons are shared unequally since the more electronegative atom pulls the electron pair closer to itself and away from the less electronegative atom.
Factors Affecting Bond Enthalpy in Chemical Bonding:
- Size of the Atom
- Multiplicity of Bonds
- Number of Lone Pair of Electrons Present
- Bond Angle