Chemical Bonding - 1

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Information about Chemical Bonding - 1
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Published on January 15, 2009

Author: youmarks

Source: slideshare.net

Description

This introduces chemical bonding to students preparing for IITJEE at http://youmarks.com

copyrights © youmarks.com Chemical Bonding Part I

Electronegativity Electronegativity is the ability of an atom to attract shared electrons to itself. It is largely the difference between the electronegativities of two atoms which determines what kind of bond is formed between them. copyrights © youmarks.com

Electronegativity is the ability of an atom to attract shared electrons to itself.

It is largely the difference between the electronegativities of two atoms which determines what kind of bond is formed between them.

Electronegativity What is the most electronegative element? What is the least electronegative element (aside from the noble gases)? What is the range of electronegativity for the metals? Metalloids? Nonmetals? Why is the electronegativity of the noble gases listed as zero? For an electron shared between hydrogen and chlorine, would you expect the electron to be closer to the hydrogen or the chlorine? (Discuss these problems in discuss problems section if you don’t know answer to any of the problem. Just post your doubt in chemsitry section) copyrights © youmarks.com

What is the most electronegative element?

What is the least electronegative element (aside from

the noble gases)?

What is the range of electronegativity for the metals?

Metalloids? Nonmetals?

Why is the electronegativity of the noble gases listed

as zero?

For an electron shared between hydrogen and chlorine,

would you expect the electron to be closer to the

hydrogen or the chlorine?

(Discuss these problems in discuss problems section if you don’t know answer to any of the problem. Just post your doubt in chemsitry section)

copyrights © youmarks.com Electronegativity

Chemical Bonding copyrights © youmarks.com

Chemical Bonding copyrights © youmarks.com

Types of Bonding copyrights © youmarks.com

Types of Bonding copyrights © youmarks.com

Types of Bonding copyrights © youmarks.com

Properties Chemical Bonding determines the physical properties of a compound. These properties are listed as in the next slide copyrights © youmarks.com

Chemical Bonding determines the physical properties of a compound. These properties are listed as in the next slide

Physical Properties of Covalent Bonds Gas, liquid, or a soft solid. Low melting point and low boiling point. Insoluble in H2O Soluble in nonpolar solvents. Nonconductor of heat and electricity. Nonlustrous copyrights © youmarks.com

Gas, liquid, or a soft solid.

Low melting point and low boiling point.

Insoluble in H2O

Soluble in nonpolar solvents.

Nonconductor of heat and electricity.

Nonlustrous

Physical Properties of Ionic Bonds Crystalline solid. Very high melting point. Soluble in H2O. Insoluble in nonpolar solvents. Nonconductor of heat and electricity. Conducts electricity in aqueous solutions. Examples: NaCl, CaCO 3 copyrights © youmarks.com

Crystalline solid.

Very high melting point.

Soluble in H2O.

Insoluble in nonpolar solvents.

Nonconductor of heat and electricity.

Conducts electricity in aqueous solutions.

Examples: NaCl, CaCO 3

Physical Properties of Metallic Bonds Malleable solid. High melting point and boiling point. Insoluble in H2O. Insoluble in nonpolar solvents. Conducts heat and electricity. Lustrous Examples: gold, copper copyrights © youmarks.com

Malleable solid.

High melting point and boiling point.

Insoluble in H2O.

Insoluble in nonpolar solvents.

Conducts heat and electricity.

Lustrous

Examples: gold, copper

In slides to come We will be discussing some topics in details in chemical bonding . In particular, things to cover in chemical bonding are: Polar Bonds Metallic Bonding Intermolecular Forces Ions: Counting Electrons And Protons Ionic And Atomic Radii Ions And Energy Lithium Fluoride Crystal Packing Crystal Packing Crystal Packing Covalent H2 Quantization Bond Length And Strength Strong And Weak Bonds Strong And Weak Bonds Covalent To Metallic Electron Delocalization Best of lucks. In the mean time, we may also be introducing some inorganic materials along with the chemical bonding series. copyrights © youmarks.com

We will be discussing some topics in details in chemical bonding . In particular, things to cover in chemical bonding are:

Polar Bonds

Metallic Bonding

Intermolecular Forces

Ions: Counting Electrons And Protons

Ionic And Atomic Radii

Ions And Energy

Lithium Fluoride

Crystal Packing

Crystal Packing

Crystal Packing

Covalent H2

Quantization

Bond Length And Strength

Strong And Weak Bonds

Strong And Weak Bonds

Covalent To Metallic

Electron Delocalization

Best of lucks. In the mean time, we may also be introducing some inorganic materials along with the chemical bonding series.

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