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Two electrons are transferred between calcium and oxygen to form calcium oxide.

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What happens to the outer shell electrons of a calcium when it reacts with a oxygen atoms?

When calcium reacts with oxygen atoms, the outer shell electrons of calcium are transferred to oxygen atoms. This leads to the formation of calcium oxide (CaO) with calcium losing 2 electrons to form a Ca2+ ion and oxygen gaining 2 electrons to form an O2- ion.


Is the bond between magnesium and oxygen a ionic or convalent?

It is ionic. Electrons are transferred from magnesium to oxygen.


What is the chemical formula of the compound made by combining calcium and oxygen Use Lewis structures to help you decide your answer?

The compound formed by combining calcium and oxygen is calcium oxide, with the chemical formula CaO. The Lewis structure for CaO shows a calcium atom with two electrons transferred to an oxygen atom, resulting in a stable ionic bond between the two elements.


Who has more electrons nitrogen calcium oxygen or sodium?

Calcium has the most electrons. Nitrogen has 7, calcium has 20, oxygen has 16 and sodium has 11 electrons.


Does the compound nitrous oxide transfer or share electrons?

Yes, electrons are transferred between the nitrogen atom and oxygen atoms.


Is calcium dioxide a covalent or ionic bond?

As with all calcium compounds it is ionic. Though the proper chemical name is calcium peroxide in this case.


How many electrons are in a CaO molecule?

Calcium oxide has 20 electrons from the calcium atom, and 8 electrons from the oxygen atom, totaling 28 electrons.


How many neutrons are in calcium oxide?

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.


How many electrons are in a molecule?

Calcium oxide has 20 electrons from the calcium atom, and 8 electrons from the oxygen atom, totaling 28 electrons.


How many outer ring electrons do calcium and oxygen have?

Calcium has 2 outer ring electrons, while oxygen has 6 outer ring electrons.


What elements combine to form the compound represented by the formula CaO?

the cation (metal) calcium (charge 2+) gives its valence electrons to the anion (nonmetal) oxygen (charge 2-) to create an ionic bond between the elements calcium and oxygen, named calcium oxide (:


How many electrons does calcium sulfate have?

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.