The octet rule is a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that
each atom has eight electrons in its valence shell
, giving it the same electronic configuration as a noble gas.
How does the octet rule relate to bonding patterns?
If atoms have similar electronegativities (the same affinity for electrons), covalent bonds are most likely to occur. Because both atoms have the same affinity for electrons and neither has a tendency to donate them, they
share electrons
in order to achieve octet configuration and become more stable.
How does the octet rule relate to valence electrons?
The octet rule refers to
the tendency of atoms to prefer to have eight electrons in the valence shell
. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.
What is the octet rule and how does it apply to chemical bonding?
The octet rule is a rule that states that the maximum number of electrons in the valence shell of an atom is 8. In terms of chemical bonding,
Lone pairs and electrons shared in a bond each count for 2 towards the valence
, while single electrons count for 1.
What is the octet rule and how is it used in covalent bonding?
What is the octet rule, and how is it used in covalent bonding? – Octet rule states
that atoms lose, gain, or share electrons to achieve a stable configuration of 8 valence electrons (octet)
. It is used in covalent bonding when the atom share electrons to achieve octet.
What is octet rule is this necessary to follow?
The octet rule dictates
that atoms are most stable when their valence shells are filled with eight electrons
. … The octet rule is only applicable to the main group elements. The molecules of the halogens, oxygen, nitrogen, and carbon are known to obey the octet rule.
What is Lewis octet rule?
Lewis formulated the “octet rule” in his cubical atom theory. The octet rule refers
to the tendency of atoms to prefer to have eight electrons in the valence shell
. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. … This is known as octet rule by Lewis.
What are the two rules in bonding?
The
Octet Rule
requires all atoms in a molecule to have 8 valence electrons–either by sharing, losing or gaining electrons–to become stable. For Covalent bonds, atoms tend to share their electrons with each other to satisfy the Octet Rule.
Which elements do not follow octet rule?
The two elements that most commonly fail to complete an octet are
boron and aluminum
; they both readily form compounds in which they have six valence electrons, rather than the usual eight predicted by the octet rule.
What is octet rule of chemical bonding?
chemical bonding
…are expressed by his celebrated octet rule, which states that
electron transfer or electron sharing proceeds until an atom has acquired an octet of electrons
(i.e., the eight electrons characteristic of the valence shell of a noble gas atom). When complete transfer occurs, the bonding is ionic.
What are the exceptions to the octet rule?
However, there are three general exceptions to the octet rule:
Molecules, such as NO, with an odd number of electrons
; Molecules in which one or more atoms possess more than eight electrons, such as SF
6
; and. Molecules such as BCl
3
, in which one or more atoms possess less than eight electrons.
What is octet rule give an example?
For example, a
chlorine atom
, which has seven valence electrons, encounters a sodium atom, which has one valence electron, and removes its one valence electron. The chlorine atom’s outer shell fills, taking on the configuration of the nearest noble gas, argon.
What is the difference between an ionic and a covalent bond?
In covalent bonds, atoms share electrons, whereas in ionic bonds
atoms transfer electrons
. The reaction components of covalent bonds are electrically neutral, whereas for ionic bonds they are both charged. … Covalent bonds are formed between two non-metals, whereas ionic bonds are formed between a metal and non-metal.
Why is the octet rule used?
Although the octet rule does not work for all elements, it does work well for such elements as carbon, bromine, chlorine, iodine, and oxygen. The octet rule is used to
describe the attraction of elements toward having, whenever possible, eight valence-shell electrons (four electron pairs) in their outer shell
.
Which type of covalent bond is the strongest quizlet?
Terms in this set (25)
which C—-O bond is the strongest?
the triple bond
is the strongest and the shortest.
What is the octet rule simple?
The octet rule states that
atoms tend to form compounds in ways that give them eight valence electrons
and thus the electron configuration of a noble gas. … Atoms of metals tend to lose all of their valence electrons, which leaves them with an octet from the next lowest principal energy level.
