Question:
The acidity of hydrides of $O , S , Se$, Te varies in the order :
The acidity of hydrides of $O , S , Se$, Te varies in the order :
Updated On: Aug 1, 2022
- $H _{2} O > H _{2} S > H _{2} Se > H _{2} Te$
- $H _{2} O < H _{2} S < H _{2} Se < H _{2} Te$
- $H _{2} S > H _{2} O > H _{2} Se > H _{2} Te$
- $H _{2} Se > H _{2} S > H _{2} O > H _{2} Te$
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The acidic nature increases from $H _{2} O$ to $H _{2} Te$ The increase in acidic character of hydrides on moving down the group may be explained in terms of bond length of $H -M$ bond, larger is bond-length, lesser is bond energy and thus easier is ionisation of $H -M$ bond or easier is proton donor nature. Hence,
$H _{2} O < H _{2} S < H _{2} Se < H _{2} Te$
Was this answer helpful?
0
0
Top Questions on Chemical bonding and molecular structure
- Which of the following compounds exhibits ionic bonding?
- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
Match the following substances with their respective equivalent weights:
- TS EAMCET - 2024
- Chemistry
- Chemical bonding and molecular structure
Match the following molecules with their respective molecular shapes:
- TS EAMCET - 2024
- Chemistry
- Chemical bonding and molecular structure
- Identify the set of molecules which are not in the correct order of their dipole moments.
- TS EAMCET - 2024
- Chemistry
- Chemical bonding and molecular structure
Arrange the following in the correct order of their boiling points:
- TS EAMCET - 2024
- Chemistry
- Chemical bonding and molecular structure
View More Questions
Questions Asked in Punjab PMET exam
- A wheel is rotating at $ 900\,\,rpm $ about its axis. When the power is cut off it comes to rest in $ 1\min $ . The angular retardation in $ rad/{{s}^{2}} $ is
- Punjab PMET - 2011
- Motion in a plane
- Galileo writes that for angles of projection of a projectile at angles $\left(45^{\circ}+\theta\right)$ and $\left(45^{\circ}-\theta\right)$, the horizontal ranges described by the projectile are in the ratio
- Punjab PMET - 2011
- Motion in a plane
- The potential energy of a weightless spring compressed by a distance a is proportional to
- Punjab PMET - 2011
- Oscillations
- The plane of a dip circle is set in the geographic meridian and the apparent dip is $\delta_1$. It is then set in a vertical plane perpendicular to the geographic meridian. The apparent dip angle is $\delta_2$. The diclination $\theta$ at the plane is
- Punjab PMET - 2011
- the earth's magnetic field
- Two masses $ M $ and $ m $ are attached to a vertical axis by weightless thread of combined length $ l. $ They are set in rotational motion in a horizontal plane about this axis with constant angular velocity $ \omega $ . If the tensions in the thread are same during motion, the distance of M from the axis is,
- Punjab PMET - 2011
- laws of motion
View More Questions
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