How do you determine the charge on an element based upon the number of valence electrons?

Answer 1

Because of the octet rule, it is easy to predict the charge of the ion of an element. Look at the number of valence electrons the element has. If it is between 1 and 4 the atom will most likely loose those electrons to become stable, making it a positive ion with the charge of the number of electrons it will lose. If it has between 4 and 8 valence electrons the atom will most likely gain electrons to achieve a full outer ring of 8 electrons. Its atom will have a negative charge of the number of electrons it needs to have 8 total.

Eight-APEX

James Terrell

THE FALLEN ONE- JAMES

TFA-The Fallen Angel

Answer 2

Know what groups the element belongs to on the Periodic Table, like group 7A has 7 valence electrons. Always know that first orbit holds a max of 2 electrons then eight max in second and so forth.

Answer 3

Most atoms are stable when they have a full valence shell or octet. Atoms will lose or gain electrons to form a full octet. So Fluorine with 7 valence electrons will gain one electron to have an octet and form a -1 ion. Calcium with 2 valence electrons will lose those two valence electrons to reach its octet and for a +2 ion.

Answer 4

A simple rule is that elements (heavier than hydrogen) that form monatomic ions lose all their valence electrons if an atom of the element has in its valence shell one, two, or three electrons to form a monatomic cation, but elements whose valence shell has five, six, or seven electrons will gain enough electrons to complete a total of eight electrons in the valence shell to form a monatomic anion. Elements with four electrons in the valence shell of their atoms will not usually form monatomic ions but will form covalent bonds instead. (Most elements can form covalent bonds under at least some circumstance, but these are outside the literal scope of the question.) Another more complicated rule is that most transition metals and the main group elements in columns 13 - 17 of a wide form periodic table, except oxygen and fluorine, will form polyatomic anions with oxygen or fluorine (and, often, with some other elements also).

Answer 5

Elements may or may not engage in chemical reactions in which they will either gain or lose electrons and thereby become charged ions. Only when there is an ionic bond, will elements become charged. Many compounds are created by means of covalent bonds, and their constituent elements do not become charged, although it also true that the shared electron cloud for that molecule will have some locations of greater density than others.

Metals, which have between one and three valence electrons, can lose electrons and thereby gain positive charges. Each electron has a charge of minus one, so for each electron lost, the atom gains a positive charge of plus one. It is the protons which are positively charged, but when electrons are lost, there will then be more protons than electrons, and hence a net positive charge.

Nonmetals having between five and seven valence electrons can gain electrons, thereby acquiring negative charges. And those elements (carbon and silicon) having four valence electrons do not gain or lose electrons, although they do share electrons by means of covalent bonds. Noble gases are chemically inert and so do not gain or lose electrons through chemical reactions (they can still be ionized electrically, as in a neon tube, and in such cases they lose electrons and form positively charged ions).

In order to know exactly what kind of ion a given element forms, it is necessary to examine the specific chemical reaction which it undergoes. Most elements can form more than one kind of bond, and can have more than one kind of charge.

Answer 6

it needs altogether 13 electrons more

Answer 7

Through science