Answer:
The electronic configuration is
1sĀ² < 2sĀ² < 2pā¶ < 3sĀ² < 3pā¶ < 4sĀ¹ < 3dĀ¹ā°
Explanation:
The energy of the main shell depends on principal quantum number and energy of subshell depends on the summation of principal and azimuthal quantum number.
Lower (n + l) value says lower energy of the subshell and higher (n + l) value represent higher energy of the subshell.
The given electronic configuration for copper with atomic number 29
The pictorial representation is as follows
