Fichas
Periodicity
Fichas del conjunto (14)
- 1Group meaningOSE
- 2PeriodHighest energy level
- 3S/P/D blockWhich subshell the highest energy electron(s) in
- 4S/P/D groupsS - 1/2
P - 13->18
D - 3->12 - 5Ionisation energy definitionEnergy required to remove one electron from each atom of one mole of gaseous atoms
- 6Factors influencing IECharge ^ = IE ^
Radius ^ = IE decrease
Shielding ^ = IE decrease - 7What is shieldingInner shell electrons repel outer shell electons
- 8Predictions from IE and whyOSE - From IE trends
Determine group from OSE - 9Trends in periodic tableIE ^ across a period (^ charge, smaller radius, same shielding).
Decreases down a group (larger radius, more shielding). - 10Be -> BElectron in B in a p orbital, higher energy level, therefore less energy must be inputted to reach IE to remove it.
- 11N->OP orbitals in N are singly occupied
Shared pair in O, repel each other, makes it easier to remove. - 12Trends in mpt across Period 2+3:Increases across from Group 1->14
Decrease between 14+ 15 - 13Why decrease?Giant covalent -> simple molecular
- 14Where DON'T these trends continue?From period 4 onwards the D block elements don't adhere to these rules
S and P block elements DO however.
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- Descripción
- El usuario ha eliminado su información de asignaturas Fichas sobre Periodicity, creado por Usuario eliminado el 19/04/2018.
- Creado por
- Usuario eliminado · abr 2018
- Actualizado
- 19 abr 2018
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- 14
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- Creado por I Shouldn't be awake · 19 abr 2018
- Copiado por I Shouldn't be awake · 19 abr 2018
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