Question

write electronic configuration of 29 cu

Answer 1

The electronic configuration of $_{29}$Cu is 1$s^{2}$ 2$s^{2}$ 2$p^{6}$ 3$s^{2}$ 3$p^{6}$4$s^{1}$3$d^{10}$ or [Ar]3$d^{10$4$s^{1}$.

Reason for the unique configuration of Cu

The ground state electronic configuration of Cu is 1$s^{2}$ 2$s^{2}$ 2$p^{6}$ 3$s^{2}$ 3$p^{6}$4$s^{2}$3$d^{9}$

We Know, when the d orbital is completely filled, the element is said to be stable.  So in order to attain a stable electronic configuration the electron from 4s goes to 3d to make it fully filled.

Now, the excited state electronic configuration of Cu is 1$s^{2}$ 2$s^{2}$ 2$p^{6}$ 3$s^{2}$ 3$p^{6}$4$s^{1}$3$d^{10}$.

Answer 2

Copper has an electronic configuration of 1s²,2s²,2p⁶,3s²,3p⁶,4s¹,3d¹⁰

Explanation:

• Copper is a chemical element with the symbol Cu and atomic number 29 and atomic weight 63.546u.

• Its electronic configuration is 1s²,2s²,2p⁶,3s²,3p⁶,4s¹,3d¹⁰

• It is an element that is a soft, malleable and ductile metal.
• It has high thermal stability and electrical conductivity.
• It is used as a good conductor of heat and electricity.
• It is used as a building constituent and various metal alloys.
• It is one of the few metals which is available in nature as a directly usable metal form.