na+has completely filled k and l shells explain
Answers
Hi there !!
Atomic number of the element = Z = 11
No: of protons is equal to the atomic number = 11
Also ,
No: of electrons = 11
Thus , electronic configuration is as follows :
K shell = 2
L shell = 8
M shell = 1
2 , 8 , 1
But , here in this case , Sodium loses one electron (Na⁺)
So , no: electrons= 10
Thus the electronic configuration becomes :
K shell = 2 electrons
M shell = 8 electrons.
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The number of electrons that can be accommodated in a given shell is given by the formula 2 n² , where n is the orbit number.
K shell :
orbit number = 1
Maximum electrons that can be accommodated = 2n² = 2 * 1² = 2 electrons
ALso ,
L shell
orbit number = 2
Maximum electrons that can be accommodated = 2n² = 2 *2² = 8 electrons.
Hence ,
Sodium (Na⁺) has completely filled K and L shells