Find bond order; N2 +, N2 - , N2 +2, CO. Arrange the given molecules in increasing order of their acidic strength.
Find bond order; N2 +, N2 - , N2 +2, CO. Arrange the given molecules in increasing order of their acidic strength.
Solution and Explanation
To determine the bond order of each molecule, we need to examine the molecular orbital diagram for each species. The bond order is calculated by taking the difference between the number of bonding electrons and the number of anti-bonding electrons and dividing it by 2.
N2+: In N2+, one electron is removed from the antibonding π*2p orbital, resulting in a bond order of (5 - 2) / 2 = 1.5.
N2-: In N2-, an additional electron is added to the antibonding π*2p orbital, resulting in a bond order of (5 - 4) / 2 = 0.5.
N2+2: N2+2 does not exist as a stable molecule since it requires four additional electrons, which is highly unfavorable.
CO: CO has a triple bond between carbon and oxygen. The molecular orbital diagram for CO shows that there are 10 bonding electrons and 6 antibonding electrons. Therefore, the bond order is (10 - 6) / 2 = 2.
Now, let's arrange the molecules in increasing order of their acidic strength:
N2- < N2+ < CO < N2+2
In terms of increasing acidic strength, the order is: N2-, N2+, CO, N2+2.
Top Questions on Chemical bonding and molecular structure
- The bond length of CO is 113 pm and its dipole moment (𝜇⃗) is 0.1 D. The charge (in units of electronic charge) on carbon in the CO molecule including its sign is (rounded off to three decimal places)
[Given: charge of electron = 1.602×10−19 C; 1 D=3.336 × 10−30 Cm]- IIT JAM CY - 2024
- Inorganic Chemistry
- Chemical bonding and molecular structure
- Match List-I with List-II :Identify the correct answer from the options given below :
List - IMolecule List - IIBond enthalpy (kJ mol-1) (A) HCl (I) 435.8 (B) N2 (II) 498 (C) H2 (III) 946.0 (D) O2 (IV) 431.0 - NEET (UG) - 2024
- Chemistry
- Chemical bonding and molecular structure
- Sum of bond order of CO and NO+ is _____.
- JEE Main - 2024
- Chemistry
- Chemical bonding and molecular structure
- Given below are two statements :
Statement (I) : Both metal and non-metal exist in p and d-block elements.
Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
In the light of the above statements, choose the most appropriate answer from the option given below:- JEE Main - 2024
- Chemistry
- Chemical bonding and molecular structure
- Match List-I with the List-IIChoose the correct answer from the options given below:
List-I
(Compound /
Species)List-II
(Shape / Geometry)(A) \(SF_4\) (I) Tetrahedral (B) \(BrF_3\) (II) Pyramidal (C) \(BrO_{3}^{-}\) (III) See saw (D) \(NH^{+}_{4}\) (IV) Bent T-shape - JEE Main - 2024
- Chemistry
- Chemical bonding and molecular structure
Questions Asked in MHT CET exam
- Two monkeys off mass 10 kg and 8 kg are moving along a vertical light rope the former climbing up with an acceleration of 2 m/second square while the latter coming down with a uniform velocity of 2 m/sec square find the tension in the rope at the fixed support
- MHT CET - 2024
- tension
- Which disease is primarily spread by female Anopheles mosquitoes?
- MHT CET - 2024
- HIV and AIDS
- Total genetic content of an organism is called
- MHT CET - 2024
- Non-Mendelian Genetics
- How many ATP molecules are needed as an initial investment in the glycolytic cycle (normal glycolysis)?
- MHT CET - 2024
- Glycolysis
- If \(A=\begin{bmatrix} 2a & -3b\\ 3 & 2\end{bmatrix}\) and \(\text{adj}A = AA^T\), then 2a+3b is?
- MHT CET - 2023
- Matrices
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