Question

write the electronic configuration of Cr (Atomic no. 24) Cu ( Atomic no. 29 ) what is it's peculiarities​

Answer 1

Answer:

1S-2

2S-2

2p-6

3S-2

3P-6

4S-2

3d-4

Answer 2

For copper it is

1s2,2s2,2p6,3s2,3p6,3d10,4s1

For chromium it is

1s2,2s2,2p6,3s2,3p6,3d5,4s1

Here the electronic configuration is different because half filled or full filled orbitals are more stable.