6
6 valence electrons
Two valence electrons
Selenium needs two more electrons.
Selenium is Atominc number: 34 It has 6 Valence electrons Therefore you take 6 from 34: 28 core electrons
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.
6 valence electrons
Selenium has 6 valence electrons
6 valence electrons
6 valence electrons
Six valence electrons
6
6. Valence electrons are the electrons in the s and p orbitals. Keeping this in mind, Se has the 4s orbitals filled (2 electrons) and has 4 electrons filled in the 4p orbital (4p4). 2+4 = 6.
Two valence electrons
A neutral atom of fluorine contains 7 valence electrons.
A neutral atom of oxygen would have 6 valence electrons.
Aluminum has 3 valence electrons.
Aluminum has 3 valence electrons.