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HCl gas is covalent and NaCl is an ionic...

HCl gas is covalent and NaCl is an ionic compound. This is because

A

sodium is highly electropositive

B

hydrogen is a non metal

C

HCl is a gas

D

Electronegativity difference H and Cl is less than 2.1 .

Text Solution

Verified by Experts

The correct Answer is:
D
A compound is said to be covalent if the electronegativity difference between the combining atoms is less than 2:1.
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Knowledge Check

  • Alumina is an ionic compound but insoluble in water because

    A
    its lattice energy is very high
    B
    its hydration energy is very high
    C
    both lattice energy & hydration energy are same
    D
    none of these

  • According to Fajans'rules, the percentage of covalent character in an ionic compound increase if the cation is highly charged or small in size and the anion is large or cation has pseudoinert gas configuration. As a result of the increased covalent character, solubility in less polar solvent increases and the melting point decreases. The correct order of increasing ionic character is

    A
    `NaCl lt KCl lt RbCl lt CsCl`
    B
    `NaCl lt KCl lt CsCl lt RbCl`
    C
    `KCl lt NaCl lt CsCl lt RbCl`
    D
    `CsCl lt RbCl lt KCl lt NaCl`

  • According to Fajans'rules, the percentage of covalent character in an ionic compound increase if the cation is highly charged or small in size and the anion is large or cation has pseudoinert gas configuration. As a result of the increased covalent character, solubility in less polar solvent increases and the melting point decreases. The correct order of increasing ionic character is

    A
    `BeCl_(2) lt MgCl_(2) lt CaCl_(2) lt BaCl_(2)`
    B
    `BeCl_(2) lt MgCl_(2) lt BaCl_(2) lt CaCl_(2)`
    C
    `BeCl_(2) lt BaCl_(2) lt MgCl_(2) lt CaCl_(2)`
    D
    `BaCl_(2) lt CaCl_(2) lt MgCl_(2) lt BeCl_(2)`

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    According to Fajan rules , the percentage of covalent character in an ionic compound increases . If the cation is highly charged or the cation is small and the anion is large or the cation has pseudo inert gas configuration . As a result of increased covalent character , the melting point decreases and solubility in less polar solvent increases . The correct order of increasing ionic character is

    HCl is a gas but HF is a low boiling liquid. This is because

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