8 all together
Calcium oxide has 20 electrons from the calcium atom, and 8 electrons from the oxygen atom, totaling 28 electrons.
The calcium ion has 18 electrons. The sulfate ion has 16 electrons from sulfur, 32 electrons from oxygen atoms and two from the charge. Altogether, a (molecule) of calcium sulfate has 68 electrons. * Calcium sulfate is not existing as molecules, 'formula unit' is a better phrase.
There are no unpaired electrons in calcium, all 20 electrons are in pairs, i.e. each pair is configured in one orbital: 2x in 1s orbital 2x in 2s orbital 2x in each of the three 2p orbitals 2x in 3s orbital 2x in each of the three 3p orbitals and 2x in 4s orbital (these two are the valence electrons)
There are 2 electrons on the outermost shell of calcium.
Calcium has 2 valence electrons, like all Group 2 elements.
Calcium oxide has 20 electrons from the calcium atom, and 8 electrons from the oxygen atom, totaling 28 electrons.
Calcium oxide has 20 electrons from the calcium atom, and 8 electrons from the oxygen atom, totaling 28 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.
Calcium has 2 outer ring electrons, while oxygen has 6 outer ring electrons.
Two electrons are transferred in the ionic bond between Calcium and Oxygen. Calcium (Ca) loses two electrons to form Ca2+ ions, while Oxygen (O) gains two electrons to form O2- ions, resulting in the transfer of two electrons in total.
Calcium carbonate has 16 valence electrons. Calcium contributes 2 valence electrons, while each oxygen atom contributes 6 valence electrons.
The calcium ion has 18 electrons. The sulfate ion has 16 electrons from sulfur, 32 electrons from oxygen atoms and two from the charge. Altogether, a (molecule) of calcium sulfate has 68 electrons. * Calcium sulfate is not existing as molecules, 'formula unit' is a better phrase.
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.
One atom of calcium donates two electrons to one atom of oxygen during the formation of the compound CaO. Calcium loses two electrons to achieve a stable octet configuration, while oxygen gains two electrons to complete its outer shell.
There are 20 electrons in a calcium atom.
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.
Calcium has 20 electrons