Bonding - Covalent | Flashcards

Questão	Responda
Definition	Shared pair of electrons between 2 atoms, both nuclei of atoms attracting that pair
Dot + cross	No square brackets
Expansion of octet rule	Occurs from n=3, as larger capacity for electrons
Lattice	Giant covalent lattice Non-metals forming network of strong covalent forces e.g. B/C/Si.
Mpt+Bpt	High - strong covalent bonds make for a stable structure
Solubility	Insoluble in almost all solvents - bonding too strong
Electrical conductivity	Non-conductors EXCEPT Graphene/'phite
Carbon giant covalent structures	Giant covalent planar hexagonal layers w/ 120'
Diff btw. 'phene 'phite	'phene = single layer, extremely stong 'phite = Parallel stacks of layers w' weak London forces between.
Conductivity of graph' '	Delocalised e- free to carry charge.

Bonding - Covalent

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