
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. What is the correct order of thermal stability of these hydrides ?

Important Questions on Hydrogen
Match List - I with List - II.
List - I (Hydrides) |
List - II (Nature) |
||
(a) | (i) | Electron precise | |
(b) | (ii) | Electron deficient | |
(c) | (iii) | Electron rich | |
(d) | (iv) | Ionic |
Choose the correct answer from the options given below:

Given below are two statements.
Statement I : Stannane is an example of a molecular hydride.
Statement II : Stannane is a planar molecule. In the light of the above statement, choose the most appropriate answer from the options given below


Electron-deficient hydride | |||
Electron-precise hydride | |||
Electron-rich hydride | |||
Saline hydride | |||

Statement I : Sodium hydride can be used as an oxidising agent.
Statement II : The lone pair of electrons on nitrogen in pyridine makes it basic.
Choose the CORRECT answer from the options given below :


Match the following:
Column I | Column II | ||
(a) | Saline hydride | (i) | |
(b) | Electron-deficient hydride | (ii) | |
(c) | Electron-precise hydride | (iii) | |
(d) | Electron-rich hydride | (iv) | |
(e) | Metallic hydride | (v) |



Saline hydrides produce gas when reacted with
Reaction of with leads to .
and are electron - rich and electron - precise hydrides, respectively.
and are called as molecular hydrides.





Which of the following statements is not true regarding metallic hydrides?
(a) They are non-stoichiometric.
(b) These hydrides have low density.
(c) The lattice of these hydrides (except a few) is the same as their parents.
(d) These hydrides obey the law of constant composition.






