FIZIK 1_1
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Transcript of FIZIK 1_1
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7/26/2019 FIZIK 1_1
1/1
Type of Bonding
Ionic Bonding
- It always found in compounds of both metallic and non metallic elements
- Eg: NaCl- One valance 3s electron from sodium transferred to Cl atom, fter a transferring process,
the Cl has a net negative charge and electron configuration identical
- Coulombic force occurs in between natrium atom and chlorine atom! "hey attract one
another
Covalent Bonding
- In covalent bonding, stable electron configuration can be assumed as sharing the electron
with ad#acent electron! $ atoms that are covalently bonded will each contribute at least
one electron to the bond and the shared electron may be considered as belongs to both
atom
- Eg: C%& 'methane(, %$O, %NO3, %) 'all in gases(- Eg: in solid* carbon, diamond, silicon, germanium, gallium arsenide, indium antimonite
'In+b(, silicon cobalt '+iC(
Metallic Bonding
- +o called the final primary bonding type
- It is found in metal and their alloy- etallic material has or $, or the most 3 valence electron
- +imple model has been proposed! .ith this model, these valence electrons are not bound
in any particular electron in solid are more or less free to drift to entire metal!
- "hey can be formed as a /sea of electrons0 and /electron clouds0!
- )or more detail, you can refer to page $3 in the te1t boo2 'Calister(
Secondary Bonding (Van der Waals Bonding)
- hysically bonds are wea2 to primary bonding
- Is evidenced in inert gases which has stable electron structure and in addition, between
molecules in molecular structures that are covalently bounded 'page 34 in the te1t boo2
'Calister((
5: E1plain why covalently bonded materials are generally less dense than ironical or metallically
bonded ones6