Question

answer fast as you can chemistry 10th class chpater:gas law and mole concept​

Answer 1

Answer:

(A) 1s2 2s2 2p6 3s2 3p6 3d10 4s1

Explanation:

Atomic number of Cu is 29.

Thus, its electronic configuration can be written as, Cu29​=1s2,2s2,2p6,3s2,3p6,3d10,4s1

(Since, fully filled orbitals are more stable, so one electron from 4s orbital transfers into 3d orbital.)

Using inert gas, the configuration of Cu can also be represented as,

Cu29 ​= 1s2 2s2 2p6 3s2 3p6 3d10 4s1

Hope this will help you.