Question

Hey frnds ☺☺☺

Explain Levis Dot structure
(Class 11th question )

Answer 1

What is Lewis Structure or Lewis dot structure?

Lewis structure or Lewis dot structure is an indicative diagram of chemical bonding. It provides a picture of bonding in molecule and ions in terms of a shared pair of electrons and the octet rule. This diagram provides the following information:

1. The bonding atoms.
2. The no. of a bond formed between the atoms. (single, double or triple bond)
3. The no. of the lone pair left in an atom.
4. Thus the Lewis structure makes it easy to study the compounds.

Rules to follow to draw Lewis dot structure

The Lewis structure can be written by using the following rules:

• First of all, calculate the total no. of valence electrons present in the molecule so as to bond them together to attain the nearest noble gas configuration. This no. can be obtained by adding the valence electrons of the combining atoms.

• For example, in the NH3 molecule, there are eight valence electrons available for bonding (5 from Nitrogen and 3 from the three hydrogen atoms).

• For anions, each negative charge would result in the addition of one electron. For cations, each positive charge would mean subtraction of one electron from the total number of valence electrons.

• For example, in the SO42- ion, the two negative charges indicate the excess of two electrons than those provided by the neutral atoms.

• For Ca2+ ion, two positive charges indicate the deficiency of two electrons from the group of neutral atoms.

• The least electronegative element occupies the central position in the molecule or ion.

• First, the single bonds are drawn between the molecules and even after that, if the octet is not complete then the multiple bonding is done till the octet is complete and after that, all the remaining electron pair becomes a lone pair.

Answer 2

HI dear...
Lewis structures go by many names, including Lewis electron dot structures, Lewis dot diagrams, and electron dot structures. All these names refer to the same sort of diagram, which is intended to show the location of bonds and electron pairs.

Key Takeaways: Lewis Structure

A Lewis structure is a diagram that shows the covalent bonds and lone electron pairs in a molecule.Lewis structures are based on the octet rule.While Lewis structures are useful for describing chemical bonding, they are limited in that they do not account for aromaticity, nor do they describe magnetic behavior accurately.

Lewis Structure Definition

A Lewis structure is a structural representation of a molecule where dots are used to show electron position around the atoms and lines or dot pairs represent covalent bondsbetween atoms. The purpose of drawing a Lewis dot structure is to identify the lone electron pairs in molecules to help determine chemical bond formation. Lewis structures may be made for molecules that contain covalent bonds and for coordination compounds. The reason is that electrons are shared in a covalent bond. In an ionic bond, it's more like one atom donates an electron to the other atom.
A Lewis structure is named for Gilbert N. Lewis, who introduced the idea in the article The Atom and the Moleculein 1916.

Also Known As: Lewis structures are also called Lewis dot diagrams, electron dot diagrams, Lewis dot formulas, or electron dot formulas. Technically, Lewis structures and electron dot structures are different because electron dot structures show all electrons as dots, while Lewis structures indicate shared pairs in a chemical bond by drawing a line.

How a Lewis Structure Works

A Lewis structure is based on the concept of the octet rule in which atoms share electrons so that each atom has 8 electrons in its outer shell. As an example, an oxygen atom has 6 electrons in its outer shell. In a Lewis structure, these 6 dots are arranged so an atom has two lone pairs and two single electrons. The two pairs would be opposite each other around the O symbol and the two single electrons would be on the other sides of the atom, opposite each other. In general, single electrons are written on the side of an element symbol.

An incorrect placement would be (for example), four electrons on one side of the atom and two on the opposite side. When oxygen bonds to two hydrogen atoms to form water, each hydrogen atom has one dot for its lone electron. The electron dot structure for water shows the single electrons for oxygen sharing space with the single electrons from hydrogen. All 8 spots for dots around oxygen are filed, so the molecule has a stable octet.

How to Write a Lewis Structure

For a neutral molecule, follow these