BeCl2exists as a polymer in:a)Liquid stateb)Vapour statec)Solid stated)All the statesCorrect answer is 'C'. Can you explain this answer?

Question

Answer

BeCl2 exists as a polymer in solid state. In this case Be atom is tetrahedrally surrounded by four chlorine atoms.

Answer

BeCl

2

exists as a polymer in solid state. In this case, Be atom is tetrahedrally surrounded by 4 chlorine atoms.

for, this reason this answer is, (C) Solid State.

Answer

Introduction:
BeCl2 is the chemical formula for beryllium chloride. It is an inorganic compound that is commonly found in solid state. In this response, we will explore the reasons why BeCl2 exists as a polymer in the solid state.

Explanation:
1. Molecular structure:
BeCl2 is a covalent compound that consists of one beryllium atom and two chlorine atoms. The beryllium atom is bonded to the two chlorine atoms through covalent bonds. The molecular structure of BeCl2 is linear, with the two chlorine atoms on opposite sides of the beryllium atom.

2. Electron configuration:
Beryllium has a 2s2 electron configuration, which means it has two valence electrons available for bonding. Chlorine has a 3s2 3p5 electron configuration, which means it has seven valence electrons available for bonding. In order to achieve a stable electron configuration, beryllium can share its two valence electrons with two chlorine atoms, forming covalent bonds.

3. Bonding in BeCl2:
The bonding in BeCl2 is covalent and involves the sharing of electron pairs between beryllium and chlorine. Each chlorine atom shares one electron pair with the beryllium atom, resulting in a linear structure. The two covalent bonds between beryllium and chlorine are highly polar due to the difference in electronegativity between the two elements.

4. Intermolecular forces:
In the solid state, BeCl2 molecules come together to form a polymer through intermolecular forces. These intermolecular forces are known as van der Waals forces, specifically dipole-dipole interactions. The polar bonds in BeCl2 create partial positive and partial negative charges, resulting in dipole moments. These dipole moments attract neighboring BeCl2 molecules, leading to the formation of a polymer.

5. Arrangement in the solid state:
In the solid state, the BeCl2 molecules arrange themselves in a polymer structure. The beryllium atoms form bridges between the chlorine atoms of neighboring molecules, creating a three-dimensional network. This network structure gives rise to the solid state of BeCl2, where the individual molecules are interconnected through covalent bonds.

Conclusion:
In conclusion, BeCl2 exists as a polymer in the solid state due to the intermolecular forces between the molecules. The linear BeCl2 molecules form a network structure through covalent bonding, resulting in a solid state. The liquid and vapor states are not applicable for BeCl2 as it primarily exists as a solid polymer.

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