How many electrons does each element required to become stable

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01-09-2019
Physics

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How many electrons does each element required to become stable

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livy2337 livy2337 · Answer 1 · 2019-09-01T02:10:57+02:00

8.

Elements require eight electrons on their outermost shell(Valence Shell) to be stable. This is known has the Octet Rule. To figure out how many valence electrons(electrons on the outermost shell) there are you look at the row in the periodic table that the element is placed in. If it’s placed in the first row, it has one valence electron, and if it’s in the eighth row, it has eight valence electrons. Most of the time elements need help to become stable, so they combined with other elements. This is know has Ionic and Covalent bonds.

Ionic Bonds: When one element gives another element valence electrons. Ex: NaCl(Sodium Chloride) and LiF(Lithium Fluoride)

Covalent Bonds: When elements share electrons. Ex: Methane Gas(Non-Polar) and Water(Polar)

Non-Polar Covalent Bonds: When elements equally share valence electrons, molecule has no charge.

Polar Covalent Bonds: a When elements unequally share valence electrons, one element is + the other is -.

sara8389 sara8389 · Answer 2 · 2019-09-01T09:17:50+02:00

sara8389 sara8389

01-09-2019

Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule. Some atoms can be stable with an octet even though their valence shell is the 3n shell, which can hold up to 18 electrons.

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