3d^6
Six electrons in the outer shell.
Zinc has ten 3d electrons.
One Mn atom contains 5 electrons in it's 3d subshell, all of which are unpaired.
Titanium atoms have 22 electrons and the shell structure is 2.8. 10.2. The ground state electron configuration of ground state gaseous neutral titanium is [Ar]. 3d2.
Potassium (K) is atomic number 19. It has 19 electrons.1s2 2s2 2p6 3s2 3p6 4s1 so it has ZERO 3d electrons. The 3d doesn't receive electrons until you reach scandium (atomic number 21).
The neutral atom of cobalt has 27 electrons. The number can vary up or down depending on the chemistry of the sample of cobalt. A link is provided to the Wikipedia article on the element cobalt.
Zinc has ten 3d electrons.
One Mn atom contains 5 electrons in it's 3d subshell, all of which are unpaired.
Titanium atoms have 22 electrons and the shell structure is 2.8. 10.2. The ground state electron configuration of ground state gaseous neutral titanium is [Ar]. 3d2.
Potassium (K) is atomic number 19. It has 19 electrons.1s2 2s2 2p6 3s2 3p6 4s1 so it has ZERO 3d electrons. The 3d doesn't receive electrons until you reach scandium (atomic number 21).
6. If you look at the electron configuration of Selenium, it is [Ar]3d^10 4s^2 4p^4, meaning 10 electrons are located in the 3rd shell, and a total of 6 are located in the 4th shell, the highest energy shell. The electrons in the 4s and 4p shells combined are the valence electrons, meaning there are 6 valence electrons on Selenium.
The neutral atom of cobalt has 27 electrons. The number can vary up or down depending on the chemistry of the sample of cobalt. A link is provided to the Wikipedia article on the element cobalt.