Question:

Which one of the following properties is generally not applicable to ionic hydrides ?

Updated On: Apr 7, 2025
  • Non-volatile
  • Non-conducting in solid state
  • Crystalline
  • Volatile
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The Correct Option is D

Approach Solution - 1

Ionic hydrides are compounds formed by metals (usually alkali or alkaline earth metals) with hydrogen, where hydrogen exists as the hydride ion (H⁻).

Properties of ionic hydrides include:

  • Non-volatile: Ionic compounds typically have high melting points and do not easily vaporize, so they are generally non-volatile.
  • Non-conducting in solid state: Ionic compounds do not conduct electricity in the solid state because the ions are fixed in a lattice and cannot move freely. They conduct electricity only in the molten or dissolved state.
  • Crystalline: Ionic hydrides typically form crystalline structures, as the ions arrange themselves in a regular, repeating pattern.

Volatility is generally not applicable to ionic hydrides because they tend to have high melting points and do not easily evaporate. Thus, option (D) is the correct answer.

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Approach Solution -2

Ionic hydrides typically have high melting points and are non-volatile because they have ionic bonds between the metal and hydrogen. Ionic compounds generally don't evaporate easily at room temperature, hence they are non-volatile. They also conduct electricity in molten or dissolved states.

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