=When an atom forms a chemical bond, one of two things usually happens to the valence electrons. Either the number of valence electrons increase to a total of eight (the most valence electrons that an atom can have), or all the valence electrons are given up.==When atoms end up with eight or zero valence electrons, the atom becomes more stable-or less reactive- than it was before.=
This depends on the bonding!
Ionic bond sp block elements (group, 1,2, 13, 15, 15, 16, 17)
Electrons are transferred to form cations and anions. The transfer may involve all of the electrons on the metal- (true for group 1 and group 2) or may not as in group 13, where for example. indium forms both In+ and In3+. In the non metal electrons are transferred into the highest energy level so the valence electrons originating on the non-metal are essentially unchanged apart from some are now being spin paired which weren't previously.
Covalent bond
This may involve some or all of the valence electrons. For example in sulfur which has 6 valence electrons two are shared in H2S the others left alone. In SF6 all are shared. In covalent bonding electrons that are shared now "orbit" two atoms rather than just one.
Metallic bond
In the group 1 and group 2 metals all of the valence electrons take part in the sea of electrons delocalised bond. For group 13 - this statement is true for aluminium but not so accurate for the heavier metals, Ga, In, Tl, where structures are distorted and some thing more complicated is going on.
Transition metals groups 3-12
The concept of valence electrons doesn't really work as the s and d electrons take part in bonding and simple rules are difficult to apply.
During the formation of chemical bonds, valence electrons will either be shared or transferred to or between atoms. This forms ionic bonds or covalent bonds.
This is a metal so it will lose its valence electrons.
During ionic bonding, the valence electrons are either lost or gained, depending on which group the element is. eg. Na + Cl --> Na+ + Cl- Na has lost an valence electron and Cl has gained an that electron. During covalent bonding, the valence electrons are shared between two atoms. eg. 2H2 + O2 --> 2H2O In H2O, each Hydrogen atom shares one pair of electrons with Oxygen by forming a covalent bond.
They are the electrons in the (outer) valence shell
In ionic bonding, the atom of the metal element loses its electrons in its valence shell to attain full electronic configuration, forming a cation and gives it to the non-metal for it to attain full electronic configuration, forming an anion. Full electronic configuration (noble gas configuration) means it has no valence electrons (electrons at its last shell). The cations and anions are arranged in giant lattice structure, whereby each cation is joined with 6 other anions and vice versa.
YES it does
This is a metal so it will lose its valence electrons.
No! Atoms with more than 4 electrons gain electrons during bonding. Atoms with less than 4 electrons tend to lose electrons during bonding. Hope this helps!
In covalent bonding atoms share their electrons. In ionic bonding one atom loses electrons while the other gains electrons, so they both become charged and then are attracted together. Valence electrons can also be set aside and not used in the bonding, for example in water oxygen uses two of its six valence electrons in covalent bonding with the two hydrogens, leaving four spare electrons which make up the two 'lone pairs'.
During ionic bonding, the valence electrons are either lost or gained, depending on which group the element is. eg. Na + Cl --> Na+ + Cl- Na has lost an valence electron and Cl has gained an that electron. During covalent bonding, the valence electrons are shared between two atoms. eg. 2H2 + O2 --> 2H2O In H2O, each Hydrogen atom shares one pair of electrons with Oxygen by forming a covalent bond.
In metals, they are transfered during reactions or thought to be lost during ion formation
Electrons are extremely small particles that circle the nucleus of an atom in an orbital. Electrons are negatively charged and balance the positive charge of the proton, in the nucleus. Valence electrons are either added or eliminated from an element during chemical reactions. Valence electrons are important in bonding, and the sharing of those electrons.
They are the electrons in the (outer) valence shell
In ionic bonding, the atom of the metal element loses its electrons in its valence shell to attain full electronic configuration, forming a cation and gives it to the non-metal for it to attain full electronic configuration, forming an anion. Full electronic configuration (noble gas configuration) means it has no valence electrons (electrons at its last shell). The cations and anions are arranged in giant lattice structure, whereby each cation is joined with 6 other anions and vice versa.
They are called valence electrons, and they are responsible for an atom's chemical properties. During a chemical reaction, the valence electrons are the only part of an atom that participates.
YES it does
Oxygen is an oxidizer, it will gain electrons in a reaction to complete it's valence shell.
During ionic bonding, atoms either lose electrons (if they are metals), or gain electrons (non-metals). The atoms now become charged ions, as there is an imbalance of protons and electrons. For example, sodium and chlorine are very, very reactive on their own, but when brought together, the sodium loses one valence electron, whilst the chlorine gains this single electron. The resulting compound is sodium chloride, which is stable, now that the ions have a full outer electron shell. For more detail, see accompanying link.