Question

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

Answer 1

Answer:

1s2,2s2,2p6,3s1 configuration

Explanation:

here s orbit consist of only 2 electrons

0 orbit consist of 6 electron in maximum as i had shown the configuration the filling of elecrons in orbit is like this so the configuration is not 2,9.

Answer 2

Answer:

BeCaUsE

according to the bohr's law ( 2n^2 )

only 8 electrons are present in 2nd orbit .