Question

(10th grade )(chemistry )
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Give examples for electro dot structures /Lewis electro dot structure .Explain in detail.
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(❎No spams ❎ )
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Answer 1

Lewis structures, also known as Lewis dot diagrams, Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDS), are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.[1][2][3] A Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds. The Lewis structure was named after Gilbert N. Lewis, who introduced it in his 1916 article The Atom and the Molecule.[4] Lewis structures extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond.

Lewis structures show each atom and its position in the structure of the molecule using its chemical symbol. Lines are drawn between atoms that are bonded to one another (pairs of dots can be used instead of lines). Excess electrons that form lone pairs are represented as pairs of dots, and are placed next to the atoms.

Although main group elements of the second period and beyond usually react by gaining, losing, or sharing electrons until they have achieved a valence shell electron configuration with a full octet of (8) electrons, hydrogen (H) can only form bonds which share just two electrons.

Answer 2

Oxygen contains 6 valence electrons with 2 lone pairs. Then, it is bonded to only one carbon atom with a double bond. Carbon contains four valence electrons, therefore giving zero lone pairs. So, it is doubly bonded to each oxygen atom.

Electron dot formula shows the number of valence electrons for that element with the help of dots. The valence electrons are those electrons that occupy the highest energy level. We can obtain it by using the periodic table. For example, the elements in group IA of the chemical periodic table have 1 valence electron.

*Aluminum is in group IIIA of the chemical periodic table. So, it has three valence electrons. So, its symbol Al will be surrounded by three dots.

*Carbon contains four valence electrons, therefore giving zero lone pairs. So, it is doubly bonded to each oxygen atom.

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