Potassium has one valence electron. Valence electrons are the electrons found in an atom's outer energy level.Know More
Potassium has an atomic number of 19, which means one neutral atom of this element has 19 electrons. There will be two electrons in the first energy level, eight in the second level, eight in the third level and one in the final energy level. This last electron is known as a valence electron.
It is possible to determine the number of valence electrons in an element by looking at the periodic table. The number of valence electrons corresponds to an element's group number. The vertical columns on the periodic table are also called groups. Because potassium is in group one, it can be assumed that it has one valence electron.Learn more about Electricity
The chemical element silicon has four valence electrons. The atom, which is the fundamental unit of an element, has its valence electrons in its outermost shell.Full Answer >
Gallium has three valence electrons. One can find this by looking at the electron configuration, which is Ga:[Ar] 4s2 3d10 4p1. In a chemical reaction, one can lose the electrons in the 4s and 4p subshell, and the total number of electrons in these subshells is three.Full Answer >
An atom of boron has three valence electrons. The valence electrons of boron occupy the second orbit around the nucleus of the boron atom. Thus, the boron atom has an electronic configuration of [He] 2s2 2p1.Full Answer >
Helium has two valence electrons. As an element, helium is very stable and contains a single s-orbital on its outer shell.Full Answer >