write about the Metallic crystals
Answers
Answer:
Metallic crystals : These are crystalline
solids formed by atoms of the same metallic element, held together by a metallic bond.
Metallic bond : In a solid metal, the valence electrons are delocalised over the entire crystal leaving behind positively charged metal ions. Therefore, metallic crystals are often described as an array of positive ions immersed in a sea of mobile electrons. The attractive interactions between cations and mobile electrons constitute the metallic bonds.
Metallic crystals have the following properties:
i. Metals are malleable, that is, they can be hammered into thin sheets.
ii. Metals are ductile, that is, they can be drawn into wires.
iii. Metals have good electrical and thermal conductivity.
Examples : metals such as Na, K, Ca, Li, Fe, Au, Ag, Co, etc.
Answer:
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In a metal, atoms readily lose electrons to form positive ions (cations). These ions are surrounded by delocalized electrons, which are responsible for conductivity. The solid produced is held together by electrostatic interactions between the ions and the electron cloud. These interactions are called metallic bonds. Metallic bonding accounts for many physical properties of metals, such as strength, malleability, ductility, thermal and electrical conductivity, opacity, and luster
Explanation:
In a metal, atoms readily lose electrons to form positive ions (cations). These ions are surrounded by delocalized electrons, which are responsible for conductivity. The solid produced is held together by electrostatic interactions between the ions and the electron cloud. These interactions are called metallic bonds. Metallic bonding accounts for many physical properties of metals, such as strength, malleability, ductility, thermal and electrical conductivity, opacity, and luster