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hydrogen bonding exists in compounds having partially positively charged hydrogen and highly electronegative atoms bearing partial -ve charge. such intermolecular forces of attraction infleuence the physical properties like melting and boilingg points. the greater the size of atoms the greater the polarazability hence the greater the boiling points for example: the hydrides of fourth period show greater boiling point than those of third period due to ggreater size and greater polarizability.
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∙ 9y ago
Some thermodynamic properties of covalent hydrides include boiling point, melting point, heat of formation, and heat capacity. These properties can vary depending on the specific covalent hydride being considered, as they are influenced by factors such as molecular structure and intermolecular forces. Additionally, thermodynamic properties play a critical role in determining the stability and reactivity of covalent hydrides.
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What are the differences between Ionic Hydrides and Covalent hydrides?
Ionic hydrides are formed between metals and hydrogen, where hydrogen gains an electron to form the hydride ion. Covalent hydrides are formed between nonmetals and hydrogen, where they share electrons to form covalent bonds. Ionic hydrides are typically solid at room temperature, while covalent hydrides can be gases, liquids, or solids.
Why ionic hydride'S are also known as true hydride'S?
Ionic hydrides are called "true hydrides" because they contain hydrogen ions (H-) and a more electropositive element, resulting in a strongly ionic bond. These hydrides are typically more reactive and have different properties compared to covalent hydrides, which do not have a direct ionic interaction.
Definition of uses of covalent and ionic hydride?
Covalent hydrides are compounds containing hydrogen bonded to nonmetals through covalent bonds, such as methane. Ionic hydrides are compounds where hydrogen is bonded to a highly electropositive metal through ionic bonds, such as sodium hydride. Covalent hydrides are typically non-metallic and have lower melting and boiling points, whereas ionic hydrides are generally more reactive due to the presence of highly electrostatic interactions.
Why covalent hydride's are nonvolatile?
Covalent hydrides have strong covalent bonds between the hydrogen atoms and other nonmetals, leading to high bond energies. This makes it difficult for the molecules to break apart and become volatile. Additionally, covalent hydrides are typically large molecules with strong intermolecular forces, which further contributes to their nonvolatility.
What are the s-block hydrides with covalent polymeric structure are?
Some examples of s-block hydrides with covalent polymeric structures are lithium hydride (LiH) and sodium hydride (NaH). These compounds have a three-dimensional network of covalent bonds between the metal cation and the hydride anion, forming a polymeric structure.
What are the differences between Ionic Hydrides and Covalent hydrides?
Ionic hydrides are formed between metals and hydrogen, where hydrogen gains an electron to form the hydride ion. Covalent hydrides are formed between nonmetals and hydrogen, where they share electrons to form covalent bonds. Ionic hydrides are typically solid at room temperature, while covalent hydrides can be gases, liquids, or solids.
Name 3 thermodynamic properties and give the relationship between them?
Three thermodynamic properties are internal energy (U), temperature (T), and entropy (S). The relationship between them is described by the First Law of Thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system, expressed as ΔU = Q - W. The Second Law of Thermodynamics quantifies the relationship between entropy, heat transfer, and temperature as dS = δQ/T, where dS is the change in entropy, δQ is heat transferred, and T is the temperature.
What has the author Lester Haar written?
Lester Haar has written: 'Ideal gas thermodynamic functions and isotope exchange functions for the diatomic hydrides, deuterides, and tritides' -- subject(s): Deuterides, Gas dynamics, Hydrides, Hydrogen, Isotopes, Tables, Thermodynamics, Tritides
Uses of covalent and ionic hydride?
Covalent hydrides, such as methane (CH4), are used as fuels, solvents, and feedstock in various industries. Ionic hydrides, such as lithium hydride (LiH), are used in nuclear reactors as sources of tritium for fusion reactions and as hydrogen storage materials for fuel cells.
What has the author S Srinivasan written?
S. Srinivasan has written: 'Simplified curve fits for the thermodynamic properties of equilibrium air' -- subject(s): Curve fitting, Equilibrium air, Thermodynamic properties
Definition of uses of covalent and ionic hydride?
Covalent hydrides are compounds containing hydrogen bonded to nonmetals through covalent bonds, such as methane. Ionic hydrides are compounds where hydrogen is bonded to a highly electropositive metal through ionic bonds, such as sodium hydride. Covalent hydrides are typically non-metallic and have lower melting and boiling points, whereas ionic hydrides are generally more reactive due to the presence of highly electrostatic interactions.
Why beryllium and magnesium form polymeric hydride?
Beryllium and magnesium can form polymeric hydrides due to their small size and high charge density, which allows them to attract and bond with multiple hydrogen atoms. This results in the formation of polymer chains or 3D networks of metal and hydrogen atoms in their hydrides.
How do you classify hydrides?
There are three types of hydride: saline, metallic and covalent (there are alternative names for the types of hydride, but these are most common). Saline hydrides have crystalline, salt like structures, and are formed with hydrogen and the group 1 and group 2 metals (the alkali metals and the alkaline earth metals). Metallic hydrides are brittle solids with fairly simple structures, generally formed between hydrogen and the transition metals. They can often have non-integer stoichiometries, e.g. ZrH1.3. Covalent hydrides are formed between hydrogen and the p-block elements, and tend to be gases as room temperature (there are exceptions to this, because of hydrogen bonding).
What two physical properties are shared by all forms of matter?
All forms of matter have mass, which is a measure of the amount of matter in an object. Additionally, matter occupies space or has volume, meaning it takes up a certain amount of physical space.
What is the smallest particle of a covalent compound that shows the properties of a compound?
The smallest particle of a covalent compound that shows the properties of that compound is a molecule.
What are complex hydrides?
Complex metal hydrides are hydrides containing in the molecule two cations - as LiAlH4.
What is the smallest particle of a covalent compound that shows the properties of that compound?
The smallest particle of a covalent compound that shows the properties of that compound is a molecule. In a covalent compound, atoms share electrons to form stable bonds, and the smallest unit that retains the chemical properties of the compound is the molecule, which consists of at least two atoms bonded together.
