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Electronic configuration
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- 1Electronic ConfigurationShell or energy levels
n is used to denote it
n=1,2,3,4,... or n=K,L,M,N,...
Sub shell
l is used to denote sub shell.
K=n=1 >> 1 s
L=n=2 >> 2 s,2 p
M=n=3 >> 3 s,3 p,3 d
N=n=4 >> 4 s,4 p,4 d,4 f
Orbitals
s >> [] >> 2 e-
p >> [][][] >> 6 e-
d >> [][][][][] >> 10 e-
f >> [][][][][][][] >> 14 e- - 2Aufbau PrincipleElectron are arranged in the form as follows,
Note-
Cu(29) (9 ka 10) and Cr(24) (4 ka 5)do not follow this rule,
Sequence is as follows,
1s,2s,2p,3s,3p,4s,
3d,4p,5s,4d,5p,6s,4f,5d,6p - 3How to locate an element in periodic table?1.Identification period number-We can identify this by knowing highest period number.
2.Identification of block-We can identify
this by the alphabet of sub shell having last electron during energy configuration.
3.Identification of block-We can identify block by various methods
For p block
n(s)+n(p)+10=Block no.
For s block
n(s)=Block no.
For d block
n(s)+n-1(d)=Block no
For f block
Group 3
Period 6 or 7 - 4TermsEnergy configuration-simple configuration
Electronic Configuration-written in sequence (especially for d block elements)
For eg
Sc(21)=1s 2s 2p 3s 3p 4s 3d (1)
(Energy config)
Sc(21)=1s 2s 2p 3s 3p 3d (1) 4s
(Electronic config)
Written A.T. 1,2,3,4,... shell number
Ionic configuration-Electronic configuration of ions.
For cation use electronic configuration.
For anion use energy configuration.
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- Descripción
- Fichas sobre Electronic configuration, creado por Prajjwal Sanskar el 15/04/2018.
- Creado por
- Prajjwal Sanskar
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