Question:
Graphite conducts electricity because of :
Graphite conducts electricity because of :
Updated On: Jul 6, 2022
- Weak van der Waal?? forces between layers
- Covalent bonding between carbon atoms of layers
- Delocalized electrons in each layer
- $sp^2$ hybridisation of carbon atoms in a layer
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The Correct Option is C
Solution and Explanation
Graphite is composed of flat twodimensional sheets of carbon atoms. Each sheet is a hexagonal net of C atoms. The $3 \,e^-$ of C form s bond & 4th electron is a $\pi $ e- and is delocalized over the whole sheet & is thus mobile. Conduction of electricity is due to these delocalized electrons within each layer. Conduction does not occur from one sheet to another.
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Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family