Physics, asked by mohi9, 1 year ago

na+has completely filled k and l shells explain

Answers

Answered by nishthaarya
4
Na+has completely filled k and l shells its k shell has 2 electrons which can contain only 2 electrons and it is completely filled and it's second shell has 8 electrons and it is also filled and its third shell has 1 electron
Answered by ujjwal26200
0

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

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