Arrange the following in increasing order of their covalent character.
A. \(CaF_2\)
B. \(CaCl_2\)
C. \(CaBr_2\)
D. \(Cal_2\)
A. \(CaF_2\)
B. \(CaCl_2\)
C. \(CaBr_2\)
D. \(Cal_2\)
- B < A < C < D
- A < B < C < D
- A < B < D < C
- A < C < B < D
The Correct Option is B
Solution and Explanation
From Fajan’s rule, for a given metal ion, as the size of anion increases, polarizability of anion increases and hence covalent character of the given ionic compound increases.
Hence, the increasing order of covalent characters is:
\(CaF_2< CaCl_2< CaBr_2< Cal_2\)
Top Questions on Chemical bonding and molecular structure
Match the LIST-I with LIST-II
LIST-I LIST-II A. PF5 I. dsp2 B. SF6 II. sp3d C. Ni(CO)4 III. sp3d2 D. [PtCl4]2- IV. sp3 Choose the correct answer from the options given below:
- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
- A group 15 element forms \( d\pi - d\pi \) bond with transition metals. It also forms a hydride, which is the strongest base among the hydrides of other group members that form \( d\pi - d\pi \) bonds. The atomic number of the element is ________________________.
- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
Given below are two statements:
Statement I : The N-N single bond is weaker and longer than that of P-P single bond
Statement II : Compounds of group 15 elements in +3 oxidation states readily undergo disproportionation reactions.
In the light of above statements, choose the correct answer from the options given below- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
Match the LIST-I with LIST-II:
Choose the correct answer from the options given below :- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
- In $ SO_2 $, $ NO_2^- $ and $ N_3^- $ the hybridizations at the central atom are respectively :
- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
Questions Asked in JEE Main exam
- In a series LCR circuit, a resistor of \( 300 \, \Omega \), a capacitor of \( 25 \, \text{nF} \), and an inductor of \( 100 \, \text{mH} \) are used. For maximum current in the circuit, the angular frequency of the AC source is -----\( \times 10^4 \) radians s\(^{-1}\).
- JEE Main - 2025
- Resonance
- A satellite of mass \( \frac{M}{2} \) is revolving around Earth in a circular orbit at a height of \( \frac{R}{3} \) from the Earth's surface. The angular momentum of the satellite is \( M \sqrt{\frac{GM R}{x}} \). The value of \( x \) is:
- JEE Main - 2025
- Satellite Motion and Angular Momentum
At steady state, the charge on the capacitor, as shown in the circuit below, is -----\( \mu C \).
- JEE Main - 2025
- Capacitors in DC Circuits
- An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of a liquid having surface tension \( 0.095 \, \text{J/m}^2 \) and density \( 10^3 \, \text{kg/m}^3 \). The difference between pressure inside the bubble and atmospheric pressure is: Given \( g = 10 \, \text{m/s}^2 \).
- JEE Main - 2025
- Surface Tension
- A massless spring gets elongated by amount \( x_1 \) under a tension of 5 N. Its elongation is \( x_2 \) under the tension of 7 N. For the elongation of \( 5x_1 - 2x_2 \), the tension in the spring will be:
- JEE Main - 2025
- Hooke's Law and Springs
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