What element has the electron configuration 4s2 3d7?

Answer 1

First, we need to add up the number of electrons in the configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10. Doing so gives a result of 30. A neutral element having 30 electrons will also have 30 protons. Checking the Periodic Table, we see that zinc is the element with 30 protons.

Answer 2

What does the element's electronic configuration end with 4s2 3d7.

Answer 3

Zinc, number 30,

complete electron configuration:

1s2, 2s2 2p6, 3s2 3p6 3d10, 4s2 with total 30 electrons

Answer 4

Cobalt has the electron configuration [Ar] 4s2 3d7.

Answer 5

cobalt