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1g) COVALENT BONDING (Simple molecular (properties (can easily charge…
1g) COVALENT BONDING
Simple molecular
only time to use the term
molecules
consists of a defined group of atoms/molecules
properties
can easily charge states
low boiling + melting point
weak inter-molecular forces are easily broken
no covenant bond needs to be broken to melt of boil molecules
separate molecules are held together by week
inter-molecular forces
(doesn't exist in any other type of structure)
giant covalent
diamand
Just carbon
every Carbon is covalently bonded to 4 other carbons
giant structure
very hard due to tetrohedral
allotropes of carbon
Graphite
weak forces holding layers together
every carbon atom has 3 Covalent bonds to other carbons
conducts electricity
delocalised electrons
acts as a lubricant
allotropes of carbon
three examples
Graphite
dimonds
(Silicon dioxide)
behaves like diamond
properties
high melting + boiling point
Covalent bonds must be broken
non-metals always want to gain electrons so they share
Electrostatic attraction between the shared electrons and nucleus of 2 atoms.
Shared electron counts to both
No charge involved
No ions involved
compounds
held together by attraction by shared pair of electrons
formed when non matal atoms react together
group 7 is contently bonded