Definitions for octet rule
octet rule

WiktionaryRate this definition:2.5 / 2 votes

1. octet rulenoun

   A rule stating that atoms lose, gain, or share electrons in order to have a full valence shell of 8 electrons. (Hydrogen is excluded because it can hold a maximum of 2 electrons in its valence shell.)

2. octet rulenoun

   The statement that when atoms combine to form molecules they generally each lose, gain, or share valence electrons until they attain or share eight; also called [Lewis rule of eight]

WikipediaRate this definition:0.0 / 0 votes

1. Octet rule

   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. The rule is especially applicable to carbon, nitrogen, oxygen, and the halogens; although more generally the rule is applicable for the s-block and p-block of the periodic table. Other rules exist for other elements, such as the duplet rule for hydrogen and helium, or the 18-electron rule for transition metals. The valence electrons can be counted using a Lewis electron dot diagram as shown at the right for carbon dioxide. The electrons shared by the two atoms in a covalent bond are counted twice, once for each atom. In carbon dioxide each oxygen shares four electrons with the central carbon, two (shown in red) from the oxygen itself and two (shown in black) from the carbon. All four of these electrons are counted in both the carbon octet and the oxygen octet, so that both atoms are considered to obey the octet rule.

WikidataRate this definition:1.0 / 1 vote

1. Octet rule

   The octet rule is a chemical rule of thumb that states that atoms of low atomic number tend to combine in such a way that they each have eight electrons in their valence shells, giving them the same electronic configuration as a noble gas. The rule is applicable to the main-group elements, especially carbon, nitrogen, oxygen, and the halogens, but also to metals such as sodium or magnesium. The valence electrons can be counted using a Lewis electron dot diagram as shown at right for carbon dioxide. The electrons shared by the two atoms in a covalent bond are counted twice. In carbon dioxide each oxygen shares four electrons with the central carbon, and these four electrons are counted in both the carbon octet and the oxygen octet.

Editors ContributionRate this definition:4.0 / 1 vote

1. octet rule

   The octet rule state that an element gain or loss electronic attain an electron configuration of the noble gas.

   
   

   Submitted by anonymous on October 28, 2020  

How to pronounce octet rule?

1. Alex

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How to say octet rule in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of octet rule in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of octet rule in Pythagorean Numerology is: 2

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Octet_Rule
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Octet_Rule
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=octet rule