Long Answer TypeWhat do you understand by:
(i) electron deficient
(ii) electron-precise and
(iii) electron rich compounds of hydrogen?
Provide justification with suitable examples.
Short Answer TypeWhat characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactivity ?
Long Answer TypeWhat do you understand by the term ‘non-stoichiometic hydrides’? Do you expect this type of hydrides to be formed by alkali metals?
Short Answer TypeSaline hydrides are known to react with water violently producing fire. Can CO2, a well-known fire extinguisher, be used in this case? Explain.
What do you expect the nature of hydrides if formed by elements of atomic numbers 15, 19, 23, 44 with dry dihydrogen? Compare their behaviour towards water.
How saline hydrides can remove traces of water from organic compounds?
Organic compounds containing traces of water can be dried by placing these organic compounds in a desiccator containing saline hydrides (i.e. NaH, CaH2 etc.) at the bottom for overnight. Saline hydrides absorb water and thus traces of water can be easily removed from the organic compounds.
Can Phosphorus with outer electronic configuration 3s23p3 form PH5?
Or
P forms PH3 but not PH5. Comment.
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