Question

Which electron configuration represents cobalt (Co)?

a) 1s² 2s² 3s² 2p⁶ 3s² 3p⁶
b) 1s² 2s² 2p⁶ 3s² 3p⁶
c) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷
d) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p³

Answer 1

The electron configuration that represents cobalt (Co) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷.

Step-by-step explanation:

The electron configuration that represents cobalt (Co) is d) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷.

The electron configuration provides information about the arrangement of electrons in an atom. In the case of cobalt, the 1s orbital is filled with 2 electrons, the 2s orbital is filled with 2 electrons, the 2p orbital is filled with 6 electrons, the 3s orbital is filled with 2 electrons, the 3p orbital is filled with 6 electrons, the 4s orbital is filled with 2 electrons, and finally, the 3d orbital is filled with 7 electrons.