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Hint- Here, we will proceed by defining the tem hydride. Then, we will be discussing the hydrides formed using ionic bonds, covalent bonds and metallic bonds. Then, we will be stating about the hydride gap and its reason.
Complete answer:
A combination of any element with hydrogen is called a hydride. Since hydrogen is such a common component of many materials we can see hydrides everywhere. Water has an oxygen-hydrogen bond, so it is a hydride. The food always has carbon-hydrogen bonds, so it is also a hydride. Many other objects will also have carbon-hydrogen bonds including plastic, clothing, wood walls, and many other compounds.
Hydrides can be bound to the element using ionic bonds, covalent bonds and metallic bonds.
Ionic hydrides are formed by those metals whose electronegativity values are lower than that of hydrogen. All the elements of group 1 and 2 on heating at high temperature form ionic hydrides.
Molecular or covalent hydrides are mainly formed by p-block elements and some s-block elements because the electronegativity between these elements and hydrogen atoms is very small.
Metallic or interstitial hydrides are formed due to the heating with dihydrogen of d-block elements situated in group 3, 4, 5, 10, 11, 12 and some f-block elements under pressure. In group 6, chromium is the only one element which forms hydride as CrH.
When heated with hydrogen under pressure, the metallic or interstitial hydrides are formed by many d-block and f-block elements. These hydrides tend to be non-stoichiometric and they may be of variable composition. There is a hydride gap where elements do not form hydrides. These metals have low affinity for hydrogen in their normal oxidation state. For example, Manganese (Mn), iron (Fe), Cobalt (Co), Rhodium (Rh), Tungsten (W), etc.
Therefore, the metals of group 7, 8 and 9 in the periodic table do not form hydrides and this region of periodic table is referred to as the hydride gap.
Hence, option C is correct.
Note- Metal hydrides are used for hydrogen storage and compressors capabilities. Hydrides are used in battery storage technologies such as nickel hydride batteries. These are also used as drying agents. Hydrides are used as strong bases. In many chemical industries, hydrides are used as reducing agents.
Complete answer:
A combination of any element with hydrogen is called a hydride. Since hydrogen is such a common component of many materials we can see hydrides everywhere. Water has an oxygen-hydrogen bond, so it is a hydride. The food always has carbon-hydrogen bonds, so it is also a hydride. Many other objects will also have carbon-hydrogen bonds including plastic, clothing, wood walls, and many other compounds.
Hydrides can be bound to the element using ionic bonds, covalent bonds and metallic bonds.
Ionic hydrides are formed by those metals whose electronegativity values are lower than that of hydrogen. All the elements of group 1 and 2 on heating at high temperature form ionic hydrides.
Molecular or covalent hydrides are mainly formed by p-block elements and some s-block elements because the electronegativity between these elements and hydrogen atoms is very small.
Metallic or interstitial hydrides are formed due to the heating with dihydrogen of d-block elements situated in group 3, 4, 5, 10, 11, 12 and some f-block elements under pressure. In group 6, chromium is the only one element which forms hydride as CrH.
When heated with hydrogen under pressure, the metallic or interstitial hydrides are formed by many d-block and f-block elements. These hydrides tend to be non-stoichiometric and they may be of variable composition. There is a hydride gap where elements do not form hydrides. These metals have low affinity for hydrogen in their normal oxidation state. For example, Manganese (Mn), iron (Fe), Cobalt (Co), Rhodium (Rh), Tungsten (W), etc.
Therefore, the metals of group 7, 8 and 9 in the periodic table do not form hydrides and this region of periodic table is referred to as the hydride gap.
Hence, option C is correct.
Note- Metal hydrides are used for hydrogen storage and compressors capabilities. Hydrides are used in battery storage technologies such as nickel hydride batteries. These are also used as drying agents. Hydrides are used as strong bases. In many chemical industries, hydrides are used as reducing agents.
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