The hybrids of which group elements of the periodic table form electron precise hybrids?
The hybrids of which group elements of the periodic table form electron precise hybrids?
group 12
group 13
group 14
group 16
The Correct Option is C
Solution and Explanation
To solve the problem, we need to identify which group of elements in the periodic table form electron precise hydrides.
1. Understanding Electron Precise Hydrides:
Electron precise hydrides are those in which all valence electrons are involved in normal 2-center-2-electron (2c–2e) bonds. There are no electron deficiencies or lone pair electrons on the central atom in such compounds.
2. Analyze Each Group:
- Group 12: Elements like Zn, Cd, Hg form hydrides that are mostly ionic or metallic, not electron precise.
- Group 13: Forms electron deficient hydrides, e.g., $B_2H_6$ (diborane), which have multi-center bonding — hence not electron precise.
- Group 14: Carbon, silicon, etc., form hydrides like $CH_4$, $SiH_4$, etc., which are electron precise. All valence electrons are involved in standard covalent bonds.
- Group 16: Forms hydrides like $H_2O$, $H_2S$, etc., where lone pairs are present on the central atom — hence not electron precise.
Final Answer:
The correct answer is Group 14, as their hydrides are electron precise.
Top Questions on Chemical bonding and molecular structure
- Polar covalent bond is present in:
- TS POLYCET - 2025
- Chemistry
- Chemical bonding and molecular structure
- Shape of H\(_2\)O molecule is:
- TS POLYCET - 2025
- Chemistry
- Chemical bonding and molecular structure
- The chemical bond formed by the overlapping of orbitals on the internuclear axis is:
- TS POLYCET - 2025
- Chemistry
- Chemical bonding and molecular structure
- Ionization energy generally:
- TS POLYCET - 2025
- Chemistry
- Chemical bonding and molecular structure
Resonance in X$_2$Y can be represented as
The enthalpy of formation of X$_2$Y is 80 kJ mol$^{-1}$, and the magnitude of resonance energy of X$_2$Y is:- JEE Main - 2025
- Chemistry
- Chemical bonding and molecular structure
Questions Asked in TS EAMCET exam
- If the roots of the quadratic equation \( ax^2 + bx + c = 0 \) are real and distinct, then which of the following conditions must be true?
- TS EAMCET - 2025
- Quadratic Equations
- If the sum of two vectors is a unit vector, then the magnitude of their difference is:
- A ball is projected vertically up with speed \( V_0 \) from a certain height \( H \). When the ball reaches the ground, the speed is \( 3V_0 \). The time taken by the ball to reach the ground and height \( H \) respectively are:
- TS EAMCET - 2025
- projectile motion
- A wire of length \(L\) and cross-sectional area \(A\) has a Young's modulus \(Y\). If the wire is stretched by a force \(F\), the elongation produced in the wire is:
- TS EAMCET - 2025
- Youngs double slit experiment
- The molecular weight of a gas is 32. If 0.5 moles of the gas occupy 22.4 liters at standard temperature and pressure (STP), what is the density of the gas?
- TS EAMCET - 2025
- Gas laws
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