Name: Understanding the Structure of Water
Uploaded: 2019-07-19
Duration: 2 min 13 s
Description: A water molecule contains two hydrogen atoms, each sharing a pair of electrons with an oxygen atom. The molecular shape is bent with an H-O-H angle of 104.5°...

Question

Give an example each of an ionic hydride and covalent hydride.

Accepted Answer

Ionic hydrides: These are formed by the combination of hydrogen with metals which are highly electropositive in character. These include elements of s-block elements i.e of group 1(alkali metals) group 2 (alkaline earth metals with the exception of $Be$ and $Mg$ ) Ionic hydrides are commonly known as saline hydrides.The examples of ionic hydride are:

$NaH$ , ${CaH}_{2}$

Covalent Hydride: These are hydrides formed by the combination of elements of comparatively higher electronegativity as of p-block elements. The common elements forming molecular hydrides are $B, C, N, O, Si$ etc. The bonds formed are mostly covalent in character. In general, compounds that are formed when hydrogen is reacted with non-metals are called covalent hydrides. The examples of covalent hydrides are:

$H_{2} O, B_{2 } H_{6} , {CH}_{4 }$ etc.

Give an example each of an ionic hydride and covalent hydride.

Chapter-Wise 3D Chemistry Videos from Dr. H.C. Srivastava ISC Nootan Chemistry Volume 1 for Class XI

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