Question

electronic configuration of sodium ion is same as that of nearest inert gas Helium true or false​

Answer 1

the answer is TRUE

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Answer 2

Answer:

A neutral sodium (

N

a

)

atom has 11 electrons.

A sodium ion

(

N

a

+

)

has lost 1 electron and is left with 10 electrons, has a valency of

1

+

and has the same electron configuration as the nearest noble gas,

N

e

, with no unpaired electrons and filled outer shell, and in stable form.

Its electron configuration is hence, filling up from bottom most energy levels first as per the normal rules of filling energy levels and orbitals, 2 electrons in the 1s orbital, 2 electrons in the 2s orbital, and 6 electrons in the 2p oribital.

Hence the configuration

1

s

2

2

s

2

2

p

6

.