Answer to Question #146851 in Organic Chemistry for Saumya

Question

element Of (3,1,0, +1/2)

Answer 1

Solution:

n = 3 means that the electron is located in the third energy shell.

l = 1 means that the electron is located in the p subshell, i.e. the electron is located in a p orbital.

An electron located in the p subshell can reside in three p orbitals because the magnetic quantum number can take three possible values.

l = 1 ⇒ ml = {−1, 0, +1}

In this case, ml = 0 which corresponds to the 3p_z orbital since the value of ms = +1/2.

Hence,

The set of quantum numbers (n = 3, l = 1, ml = 0, ms = + 1/2 can describe the last electron of the aluminum (Al) atom:

1s²2S²2p⁶3S²3p¹