In the formation of calcium oxide (CaO), one atom of calcium donates two electrons to one atom of oxygen. Calcium, which is an alkaline earth metal, has two valence electrons and readily loses them to achieve a stable electron configuration. Oxygen, a nonmetal, requires two electrons to complete its valence shell, thus forming the ionic compound CaO.
Zinc has two valence electrons.
Aluminum has 3 valence electrons.
3 valence electrons
Depends on what you mean by number of electrons. Calcium has 20 electrons and oxygen has 8 electrons for a total of 28 electrons. But if you mean how many VALENCE electrons, then the calcium has 2 and the O has 6 for a total of 8 valence electrons.
First, calcium oxide is an ionic compound and so does not form molecules. In one formula unit (ionic equivalent of a molecule) of calcium oxide there is 1 oxygen (8 protons) atom and 1 calcium atom (20 protons) for a total of 28.
In the formation of calcium oxide (CaO), one atom of calcium donates two electrons to one atom of oxygen. Calcium, which is an alkaline earth metal, has two valence electrons and readily loses them to achieve a stable electron configuration. Oxygen, a nonmetal, requires two electrons to complete its valence shell, thus forming the ionic compound CaO.
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6
Zinc has two valence electrons.
5 valence electrons.
Aluminum has 3 valence electrons.
Beryllium has two valence electrons.
3 valence electrons
There are 3 valence electrons in an atom of aluminium.
There are no valence electrons.
Lead has 4 valence electrons.