Question:
In the long form of periodic table, the \(d\)-block element which forms interstitial hydride is
In the long form of periodic table, the \(d\)-block element which forms interstitial hydride is
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Interstitial hydrides are usually formed by transition metals. In these hydrides, hydrogen atoms occupy the interstitial spaces of the metal lattice rather than forming discrete ionic or covalent bonds.
Updated On: Jun 26, 2026
- Mo
- W
- Ni
- Cr
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The Correct Option is D
Solution and Explanation
Step 1: Understand interstitial hydrides.
Interstitial hydrides are compounds formed when hydrogen atoms occupy the interstitial spaces (voids) in the crystal lattice of metals without significantly disturbing the metallic structure.
These hydrides are generally formed by transition metals, especially those belonging to the \(d\)-block.
Step 2: Characteristics of interstitial hydrides.
Interstitial hydrides generally show the following properties: \[ \bullet \ \text{Metallic conductivity} \] \[ \bullet \ \text{Non-stoichiometric composition} \] \[ \bullet \ \text{High melting points} \] \[ \bullet \ \text{Hard and brittle nature} \] They are commonly formed by transition metals such as Ti, Zr, Hf, V, Nb, Ta and Cr
Step 3: Analyze the given options.
Among the given elements, \[ \text{Mo},\ \text{W},\ \text{Ni},\ \text{Cr} \] the standard example of a \(d\)-block element forming interstitial hydrides is Cr Thus, chromium forms interstitial hydrides by accommodating hydrogen atoms in the interstitial sites of its metallic lattice.
Step 4: Final conclusion.
Therefore, the \(d\)-block element that forms interstitial hydride is \[ \boxed{\text{Cr}} \] Hence, the correct option is \[ \boxed{(4)} \]
Interstitial hydrides are compounds formed when hydrogen atoms occupy the interstitial spaces (voids) in the crystal lattice of metals without significantly disturbing the metallic structure.
These hydrides are generally formed by transition metals, especially those belonging to the \(d\)-block.
Step 2: Characteristics of interstitial hydrides.
Interstitial hydrides generally show the following properties: \[ \bullet \ \text{Metallic conductivity} \] \[ \bullet \ \text{Non-stoichiometric composition} \] \[ \bullet \ \text{High melting points} \] \[ \bullet \ \text{Hard and brittle nature} \] They are commonly formed by transition metals such as Ti, Zr, Hf, V, Nb, Ta and Cr
Step 3: Analyze the given options.
Among the given elements, \[ \text{Mo},\ \text{W},\ \text{Ni},\ \text{Cr} \] the standard example of a \(d\)-block element forming interstitial hydrides is Cr Thus, chromium forms interstitial hydrides by accommodating hydrogen atoms in the interstitial sites of its metallic lattice.
Step 4: Final conclusion.
Therefore, the \(d\)-block element that forms interstitial hydride is \[ \boxed{\text{Cr}} \] Hence, the correct option is \[ \boxed{(4)} \]
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