How the electrons of oxygen are arranged around the nucleus?

Oxygen has eight total electrons — two orbit the nucleus in the atom’s inner shell and six orbit in the outermost shell.

What happens when you add electrons to oxygen?

Because electrons have a charge of 1-, adding two electrons would make the charge of the oxide ion 2-. Oxygen takes the electron density from other atoms when it forms two bonds, to become a negative two ion.

Why are there more electrons around oxygen?

Oxygen has a higher electronegativity ( 3.5) than Hydrogen (2.2) so the electrons are drawn more to the Oxygen than Hydrogen.

Does more electrons mean more reactive?

The larger an atom is, the more reactive it will be. It helps to think about the size of an atom with the location of the electrons and nucleus in mind. If electrons can leave more easily, then the atom is more likely to react.

Does oxygen lose or gain electrons to become an ion?

The charge on an ion is equal to the difference in the number of electrons and that of protons it contains- in other words, the number of electrons its parent atom has gained or lost. An electrically-neutral oxygen atom gains two electrons to form an oxygen ion with two negative charges.

What does an oxygen atom do when becoming an ion does it gain or lose electrons and how many?)?

It will gain 2 electrons rather than losing 6. An oxygen atom has an overall neutral charge because it has an even number of protons and electrons. What is the overall charge on an oxygen ion? After gaining 2 negative electrons the charge will be -2.

What is it about oxygen that allows it to pull the electrons closer to it than hydrogen?

Oxygen is more electronegative than hydrogen, so the electrons of the covalent bonds spend more time closer to oxygen than in hydrogen. Polar covalent bonds form when electrons are shared unequally.

Why do oxygen atoms bond together?

Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell. The shared electrons spend more time near the oxygen nucleus, giving it a small negative charge, than they spend near the hydrogen nuclei, giving these molecules a small positive charge.

How do electrons affect reactivity?

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Alkali metals are highly reactive because they readily lose the single electron in their outermost shell.

How do electrons relate to reactivity?

The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. In general, atoms are most stable, least reactive, when their outermost electron shell is full.

What is the relationship between valence electrons and reactivity?

Within each group of metals, reactivity increases as you go down the group. The valence electrons are less tightly bound and easier to remove, because they are farther away from the nucleus of the atom. A nonmetal tends to attract additional valence electrons to attain a full valence shell.

What determines the number of electrons in an atom’s outermost valence shell?

The number of electrons in an atom’s outermost valence shell governs its bonding behaviour. Explanation: The valence electrons are the electrons in the outermost electron shell of an atom. That is why elements whose atoms have the same number of valence electrons are grouped together in the Periodic Table.

What is the role of unpaired electrons in the atom?

Unpaired electrons are able to disrupt existing structures during collisions which enables the rearrangement of atoms.

How does the reactivity of a metal change down the group?

Within each group of metals, reactivity increases as you go down the group. The valence electrons are less tightly bound and easier to remove, because they are farther away from the nucleus of the atom.