How to write electronic configuration of elements
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Electronic configuration according to Bohr Bury Scheme can be written as :
1) Maximum no. of electrons that a shell can accommodate is 2n2 where n is no. of shell
For Eg :
1st shell is K for which n=1
thus it can accommodate MAXIMUM 2(1)2= 2 electrons
2nd shell is L
thus it can accommodate MAXIMUM 2(2)2= 8electrons
similarly,
M can accommodate maximum 18 electrons
N can accommodate maximum 32 electrons
Now when we write Electronic configuration of an element when the shell of lower energy is filled fully then filling of electrons in next shell takes place.
For Eg :
1)
Na (sodium)
Atomic number = 11 which is equal to no. of electrons
Thus its electronic configuration
2,8,1
Where K shell is completely filled
L shell is also completely filled
M Shell consist of one electron
2) Mg (MAGNESIUM)
Atomic number = 12 which is equal to no. of electrons
Thus its electronic configuration
2,8,2
Where K shell is completely filled
L shell is also completely filled
M Shell consist of TWO electron
thus on going from sodium to magnesium one electron increases which is accommodated in the M shell of Magnesium
Though this method of writing an electronic configuration is old fasioned now that is it has become obsolete
Modern method consists of writing Orbitals instead of Shell
which you will be studying in higher classes.
1) Maximum no. of electrons that a shell can accommodate is 2n2 where n is no. of shell
For Eg :
1st shell is K for which n=1
thus it can accommodate MAXIMUM 2(1)2= 2 electrons
2nd shell is L
thus it can accommodate MAXIMUM 2(2)2= 8electrons
similarly,
M can accommodate maximum 18 electrons
N can accommodate maximum 32 electrons
Now when we write Electronic configuration of an element when the shell of lower energy is filled fully then filling of electrons in next shell takes place.
For Eg :
1)
Na (sodium)
Atomic number = 11 which is equal to no. of electrons
Thus its electronic configuration
2,8,1
Where K shell is completely filled
L shell is also completely filled
M Shell consist of one electron
2) Mg (MAGNESIUM)
Atomic number = 12 which is equal to no. of electrons
Thus its electronic configuration
2,8,2
Where K shell is completely filled
L shell is also completely filled
M Shell consist of TWO electron
thus on going from sodium to magnesium one electron increases which is accommodated in the M shell of Magnesium
Though this method of writing an electronic configuration is old fasioned now that is it has become obsolete
Modern method consists of writing Orbitals instead of Shell
which you will be studying in higher classes.
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Answered by
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fr 10 class
there are some orbitols they are, s p d f
S orbitole can hold 2 electrons
P can hold 6 electrons
D can hold 10 electrons
F can hold 14 electrons
this follows.
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p 8s
fr 9th class
there r main shells called K, L, M, N
K can hold only 2 electrons
L can hold 8
M can hold 18
N can hold 32
we decide electrons by formula 2(n)^2
n denotes shell number
first we want to fill the electrons in the first shell and after we want to enter into second and after third and filling all we want to enter 4th
hope it helps u
follow me
mark as brinalest
there are some orbitols they are, s p d f
S orbitole can hold 2 electrons
P can hold 6 electrons
D can hold 10 electrons
F can hold 14 electrons
this follows.
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p 8s
fr 9th class
there r main shells called K, L, M, N
K can hold only 2 electrons
L can hold 8
M can hold 18
N can hold 32
we decide electrons by formula 2(n)^2
n denotes shell number
first we want to fill the electrons in the first shell and after we want to enter into second and after third and filling all we want to enter 4th
hope it helps u
follow me
mark as brinalest
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