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Another name for the molecular orbital theory of bonding in metals is the band theory. Band theory describes how atomic orbitals combine to form energy bands, which explains the electrical conductivity and other properties of metals. It highlights the overlap of atomic orbitals in a solid, leading to the formation of conduction and valence bands.
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Why molecular orbital theory explain conductivity in metal?
Molecular orbital theory explains conductivity in metals by describing how atomic orbitals combine to form molecular orbitals that are delocalized over a large number of atoms. In metals, these molecular orbitals form a band structure where the conduction band is partially filled or overlaps with the valence band, allowing electrons to move freely. This delocalization of electrons facilitates the flow of electric current, making metals good conductors. The presence of these overlapping orbitals provides a pathway for electron mobility, essential for electrical conductivity.
Are alkali metals softer or harder than other metals?
The softness of alkali metals has to do with metallic bonding in terms of bonding and anti bonding orbitals. In molecular orbitals, there are the s, p, d orbitals with corresponding anti-bonding orbitals. For alkali metals, the s orbital is only partially filled. This means that the bonds between each atom are weak because only a cloud of s-orbital electrons are holding them together. As we move right across the periodic table the strength of metals reach a maximum at about group 7-8. This is because at this point anti-bonding and bonding orbitals are both partially filled and this maximizes the amount of unpaired electrons that participate in the electron cloud that holds metallic bonds together. As we proceed further right (toward Au) the bonds become weaker because the bonding and anti-bonding orbitals begin to fill and pair up. This means these electrons do not participate in the electron cloud of metallic bonding. Thus a weaker bond (softer metal) is formed.
Does metalloids have properties of both metals and inner transition metals?
Metalloids are unlike the inner transtion metals and all other metals. They are giant molecules whose bonding could be described as covalent. However consider silicon - perhaps the most widey used metalloid- it has a structure like diamond with tetrahedral bonds- but it is a semiconductor- this is because in molecular orbital terms the antibonding orbitals are sufficiently close to the energy of the bonding orbitals (band gap -using the nomenclature of band theory) for thermal excitation into the antibonding orbitals to take place.This is an oversimplification.
What kind of elements forms after cation bonding?
metals
What tend to lose electrons in order to become stable?
In chemistry, metals are the elements that tend to lose electrons when they react to form compounds; Non-metals tend to gain electrons when they form compounds. When metals and non-metals react and exchange electrons with one another they form an ionic bond.
In a pure sodium are there molecular bonding?
in pure metals, there is molecular bonding. These bondings are known as metallic bonds.
Does hydrogen gas have a ionic or molecular?
Hydrogen gas is a molecular compound because it is two non-metals bonding. Non-metal + Non-metal = Molecular compound Metal + Non metal = Ionic compound
Is CCl4 a ionic or molecular compound?
Based off my chemistry class, for bonds to be ionic it must be a bonding of a metal and a non-metal. Since chlorine and carbon are both non metals they can't be ionic, we would call it covalent bond but molecular compound works as well.
Is HI ionic or molecular?
Hydrogen iodide is a covalent compound.
Is a molecular compound likely to form from two metals?
No, molecular compounds typically form from nonmetals or metalloids bonding with each other, rather than from two metals. Metals tend to form metallic bonds with each other, where electrons are shared among all atoms in a sea of delocalized electrons.
Are molecular compounds made up of metals or nonmetals?
Molecular compounds are typically made up of nonmetals. Metals tend to form ionic compounds with nonmetals, whereas nonmetals tend to share electrons with other nonmetals, resulting in the formation of molecular compounds through covalent bonding.
Are alkali metals softer or harder than other metals?
The softness of alkali metals has to do with metallic bonding in terms of bonding and anti bonding orbitals. In molecular orbitals, there are the s, p, d orbitals with corresponding anti-bonding orbitals. For alkali metals, the s orbital is only partially filled. This means that the bonds between each atom are weak because only a cloud of s-orbital electrons are holding them together. As we move right across the periodic table the strength of metals reach a maximum at about group 7-8. This is because at this point anti-bonding and bonding orbitals are both partially filled and this maximizes the amount of unpaired electrons that participate in the electron cloud that holds metallic bonds together. As we proceed further right (toward Au) the bonds become weaker because the bonding and anti-bonding orbitals begin to fill and pair up. This means these electrons do not participate in the electron cloud of metallic bonding. Thus a weaker bond (softer metal) is formed.
What is the bonding of metals?
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Does metalloids have properties of both metals and inner transition metals?
Metalloids are unlike the inner transtion metals and all other metals. They are giant molecules whose bonding could be described as covalent. However consider silicon - perhaps the most widey used metalloid- it has a structure like diamond with tetrahedral bonds- but it is a semiconductor- this is because in molecular orbital terms the antibonding orbitals are sufficiently close to the energy of the bonding orbitals (band gap -using the nomenclature of band theory) for thermal excitation into the antibonding orbitals to take place.This is an oversimplification.
Is N2O3 ionic or molecular?
molecular
What accounts for the observed differences in the properties of ionic and molecular compounds?
t Answer Well firstly, ionic compounds form from metals bonding with non metals. Molecular/covalent form from non metals bonding with non metals. A strong electrostatic force between ionic compounds results in them having high melting points. A weaker electrostatic force between molecular compounds results in them having lower melting points and thus weaker bonds. Ionic compounds are made up of ions, so will conduct electricity. Covalent compounds only share electrons and so are not ions, and will not conduct electricity.
What type of elements are involved in ionic bonding?
metals and non-metals.
