Solve this :
141. The variation of radial probability density R²(r) as a function of distance r of the electron from the nucleus for 3p-orbital :

142. In iron atom, how many electrons have n = 3 and l = 2 ?
(a) 2                (b) 4                (c) 6                   (d) 8
 

Heya user !!!

Here's the answer you are looking for

Iron (Fe) has atomic number 26

And n=3 means the shell number is 3

and l = 2 means the subshell is d

So the question says how many electrons are there in 3d orbital

The electronic configuration of Fe goes this way
1s² 2s² 2p6 3s² 3p6 4s² 3d6

So here, 6 electrons are there in 3d.