Which is correct about TeCl4 ? (1) In it Te is sp ^3 d hybridized (2) It has 4 bp and 1 lp elec

step 1 Which is correct about tellurium tetrachloride. There are four given options and out of these th

Which is correct about TeCl4 ? (1) In it Te is sp ^3 d...

Which is correct about $\mathrm{TeCl}_{4}$ ?
(1) In it Te is sp $^{3} \mathrm{~d}$ hybridized
(2) It has 4 bp and 1 lp electrons on Te atom
(3) It is having T - shape
(4) It reacts with $\mathrm{HCl}$ to give $\mathrm{H}_{2}$ TeCl6
(a) $1,2,3$ (b) $1,3,4$
(c) $2,3,4$ (d) $1,2,4$

Key Concepts

Hybridization

Hybridization in main?group compounds involves the mixing of atomic orbitals to form new hybrid orbitals that can accommodate bonding pairs and lone pairs of electrons. In molecules with five regions of electron density, such as when a central atom makes four bonds and carries one lone pair, an sp³d hybridization model is often invoked to explain the distribution of electron density around the atom.

VSEPR Theory

The Valence Shell Electron Pair Repulsion (VSEPR) theory is used to predict the shape of a molecule by considering the repulsions between all electron pairs (bonding and lone pairs) around a central atom. This theory helps in determining how the electron pairs, which are arranged to minimize repulsion, dictate the overall geometry of the molecule.

Molecular Geometry

Molecular geometry refers to the three?dimensional arrangement of atoms in a molecule that results after considering the repulsion between bonding pairs and lone pairs of electrons. The distinction between electron pair geometry and molecular geometry is crucial; while the electron pair geometry is based on all regions of electron density, the observed molecular geometry accounts only for the positions of the atoms, leading to shapes such as the see?saw geometry rather than T?shaped when a lone pair is present.

Complex Formation and Reactivity with Acids

Reactivity involving central atoms in halide compounds can include the formation of coordination complexes or adducts when the compound reacts with additional ligands or acids. In such reactions, extra halide ions or acids may be incorporated into the structure, leading to new species with different stoichiometry and coordination environments, illustrating important aspects of inorganic reactivity and Lewis acid-base interactions.

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