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. … Thus, an atom continues to form bonds until an octet of electrons is made. This is known as octet rule by Lewis.
How do you use the octet rule?
There are two ways in which atoms can satisfy the octet rule. One way is
by sharing their valence electrons with other atoms
. The second way is by transferring valence electrons from one atom to another.
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.
What is octet rule explain with an example?
In chemistry, the octet rule
explains how atoms of different elements combine to form molecules
. … In a chemical formula, the octet rule strongly governs the number of atoms for each element in a molecule; for example, calcium fluoride
What 3 elements can break the octet rule?
Hydrogen, beryllium, and boron
have too few electrons to form an octet. Hydrogen has only one valence electron and only one place to form a bond with another atom.
What are 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.
How do you know if a octet is satisfied?
The Octet Rule says that an atom is in its most stable state when it has a full valence shell (8 electrons in its valence shell). So,
atoms take the electrons of other atoms
to satisfy the Octet Rule. For example, carbon only has four valence electrons.
What is octet rule answer?
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 octet rule Toppr?
The octet rule refers to an
important principle that the atoms which have bonded share eight outer electrons
. This certainly means that the atom’s valence shell has a resemblance with a noble gas. … For achieving eight electrons in their outer shells, atoms would gain or lose the valence electrons.
What is octet rule class11?
The Octet rule states that
main group elements try to bond with other atoms or species
in such a way that all of them will possess stable electronic configuration. In other words we can also say that eight electrons in the outermost shell or valence shell of each atom.
Which does not follow octet rule?
The two elements that most commonly fail to complete an octet are
boron and aluminium
; they both readily form compounds in which they have six valence electrons, rather than the usual eight predicted by the octet rule.
Why can I break the octet rule?
The octet rule is based on the availability of an s and three p orbitals holding eight electrons. … However, for n=3 there are also the 3d orbitals available, albeit at higher energy than the s and p orbitals. So
any element from the third or later periods technically
has the ability to break the octet rule.
Why does sulfur break the octet rule?
Sulfur can make use of its 2 unpaired electrons to form 2 covalent bonds plus the 4 electrons from its 2 lone pairs to give a total of 8 electrons
. Hence sulfur obeys octet rule in this case. But sulfur can unpair its electrons and promote one of its electrons (highlighted in green) to an empty 3d orbital.
Which follows octet rule?
Elements that obey octet rules are main group elements which are
oxygen, carbon, nitrogen
. s-block and p-block elements obey octet rule except for hydrogen, helium, and lithium.
Which substance does not obey the Lewis octet rule?
Nitric oxide
: Nitric oxide (NO) is an example of a stable free radical. It does not obey the octet rule on the nitrogen atom. Each line around the atoms represents a pair of electrons.
Which two suborbitals are needed for the octet rule?
The s and p suborbitals
are needed for the octet rule. … Atoms of metals sometimes lose their valence electrons which cause them to have a complete octet in the lower level. Nonmetals have some atoms that also gain electrons or share electrons with other nonmetal elements to form their desired compound.
