| List - I (Hydride) | List - II (Type of hydride) |
| A. \[B{{e}_{2}}{{H}_{2}}\] | 1. Complex |
| B. \[As{{H}_{3}}\] | 2. Lewis acid |
| C. \[{{B}_{2}}{{H}_{6}}\] | 3. Interstitial |
| D. \[La{{H}_{3}}\] | 4. Covalent |
| E. \[LiAl{{H}_{4}}\] | 5. Intermediate |
| 6. Ionic |
A) A-6, B-2, C-4, D-5, E-1
B) A-6, B-2, C-4, D-3, E-1
C) A-6, B-4, C-2, D-3, E-5
D) A-6, B-4, C-2, D-3, E-1
E) A-5, B-4, C-2, D-3, E-1
Correct Answer: E
Solution :
Complex Addition compounds which do not give all their constituent ions when dissolved in water, individual identity of ions are lost, eg, \[-[Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}},\,LiAl{{H}_{4}}\]etc. Lewis acid- Electron deficient species which gain electrons while forming a bond with Lewis bases. eg,\[-{{B}_{2}}{{H}_{6}}\]. Interstitial metal hydrides-\[f-\]block hydrides are non-stoichiometric eg,\[La{{H}_{n}}\]etc, where chemical composition is variable\[eg,-\] \[La{{H}_{2.87}},{{X}_{b}}{{H}_{2.5}}\]etc. Intermediate hydride- Polymeric in nature eg, \[Be{{H}_{2}}\] Covalent hydride- Bond forms by sharing of electron, eg,\[As{{H}_{3}}\].
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