The octet rule is a basic way to determine if the atoms involved in a covalent molecule have enough electrons to fill their valence shells. It simply says that each atom must be able to "reach" a total of 8 electrons to be full. There are many exceptions, due to it not being an entirely true rule.
look for it on the chemistry book, and don't be lazy!Covalent bonding is all about "sharing electrons" so the two elements share electrons (which forms a covalent bond) in order to complete or help complete their octet.
The octet rule is used to determine how many covalent bonds an element can form. This rule states that elements tend to gain, lose, or share electrons to achieve a full outer valence shell with eight electrons.
The best way to predict covalent bonds is to consider the number of valence electrons in each atom and their electronegativities. Atoms with similar electronegativities tend to form nonpolar covalent bonds, while atoms with different electronegativities form polar covalent bonds. The octet rule can also be used to predict covalent bonding in many cases.
Lewis dot structures are used to represent covalent bonds among atoms in a molecule. Each atom's symbol is surrounded by dots, representing valence electrons. Pairs of dots are used to represent covalent bonds, following the octet rule where each atom aims to have a full outer shell of electrons, typically 8 electrons.
The electrons in the outermost orbital used in chemical bonding are called valence electrons. They are involved in forming bonds with other atoms to complete the octet rule and achieve stability.
look for it on the chemistry book, and don't be lazy!Covalent bonding is all about "sharing electrons" so the two elements share electrons (which forms a covalent bond) in order to complete or help complete their octet.
The octet rule is used to determine how many covalent bonds an element can form. This rule states that elements tend to gain, lose, or share electrons to achieve a full outer valence shell with eight electrons.
covalent bonding is used to share electrons
The best way to predict covalent bonds is to consider the number of valence electrons in each atom and their electronegativities. Atoms with similar electronegativities tend to form nonpolar covalent bonds, while atoms with different electronegativities form polar covalent bonds. The octet rule can also be used to predict covalent bonding in many cases.
Most elements have a stable electron arrangement when they have 8 electrons in their outer shell (hydrogen and helium are exceptions, they are stable with only 2 electrons in their outer shell), and an octet is 8 of something, hence the octet rule. Lewis dot diagrams are drawn to show how many electrons are associated with any given atom, and how the atoms are shared, in the case of covalent bonding. Generally, each atom winds up with 8 electrons. Not hydrogen.
Lewis dot structures are used to represent covalent bonds among atoms in a molecule. Each atom's symbol is surrounded by dots, representing valence electrons. Pairs of dots are used to represent covalent bonds, following the octet rule where each atom aims to have a full outer shell of electrons, typically 8 electrons.
The electrons in the outermost orbital used in chemical bonding are called valence electrons. They are involved in forming bonds with other atoms to complete the octet rule and achieve stability.
Covalent bonding.
The very simple duet and octet models of covalent chemical bonding describe the chemical bond as involving an electron pair situated between atoms and that atoms lighter than He (there is only H!) achieve a stable duet (2 electrons)-- atoms heavier than He achieve an octet. the duet and octet are the stable configurations of noble gases. Lewis dot diagrams are typically used to "place" the electrons in the appropriate positions.
This is called covalent bonding.
There are actually 3 types of chemical bonding- Ionic bonding, covalent bonding and metallic bonding.
Although it was a slow process involving numerous years of research and chemists, in 1919 Irving Langmuir refined the concept into the cubical octet atom and octet theory. This octet theory evolved into what is now known as the octet rule.