Question

the electronic configuration of sodium is written as 2,8,1 but not 2,9 explain ​

Answer 1

Answer:

because K shell consists only two electrons and L shell consists only 8 shells therefore the left electron will go to the next M shell.

HOPE IT WILL HELP YOU... :)

Answer 2

Answer:

because we completed its octate so we do the electronic configuration of sodium is written as 2,8,1 not as 2,9 kyuki Jo valany 1 hame batata h ki oo.... element ki period aur group me rahata h