An atom of magnesium has 12 electrons. These electrons are negatively charged particles and revolve around the nucleus of the magnesium atom in fixed orbits. The nucleus has 12 positively charged protons.
The electronic configuration of the magnesium atom is 2, 8, 2; this means that the first orbit has a complete set of two electrons, the second orbit has a complete octet, or eight electrons, and the third orbit has an incomplete set of two electrons. The magnesium atom prefers to lose these two electrons during a chemical reaction. This makes magnesium electropositive and gives magnesium a valence of 2 for chemical reactivity. The atomic number of magnesium is 12. Magnesium is an alkaline earth metal.Learn More
Like all alkaline earth metals, magnesium has two valence electrons, meaning there are two electrons in its outer shell. The valence electrons are the ones that an atom shares, gains or loses when interacting with additional atoms.Full Answer >
The most common magnesium ion has a +2 charge, which means it has lost two of its original 12 electrons, leaving it with a total of 10 electrons. The atomic number of magnesium is 12, which means that in its stable state, it has 12 protons and 12 electrons.Full Answer >
Each magnesium atom has two valence electrons. Valence electrons obtain their name from their location within an atom. These electrons are located within the outer layer of an atom.Full Answer >
Magnesium has two valence electrons. Valence electrons determine the chemical properties of an atom. The periodic table of elements is used to find the number of valence electrons in an element.Full Answer >