The three molecular shapes of the tetrahedral electron-group arrangement Examples: CH 4 , SiCl 4 ,
3 Types of Chemical Bonds •Ionic •Covalent •Metallic What can you describe about each of these bonds just by looking at the name?
3 Hydrogen Bonds A hydrogen atom is weakly shared between two electronegative atoms Hydrogen bonds are an example of a readily reversible electrostatic
Atoms of same element or of different elements can join together to form a Some examples of molecules containing non polar covalent bonds are H2,Cl2,O2
2 Electronegativity 3 Road Map 4 Types Of Bonding 5 Properties Controlled By Chemical Bond 6 Polar Bonds 7 Metallic Bonding
There are 3 major types of chemical bonds that “glue” together atoms and ions in The classic examples illustrating this type of bonding are
results from the sharing of electrons between the atoms For example H • + • H ? H •• H or H : H Each pair of shared
There are three main types of chemical bonds: ionic bonds, covalent bonds, For example, the compound lithium fluoride (LiF) is formed when a lithium
Most important 2: A chemical bond between two atoms forms if the resulting structural formulas reveal the very different connectivities bond length
Example: Nitrogen, N, is in Group 5A and therefore has 5 valence electrons To draw the of atoms but different locations of bonding and lone electron pairs
Chemical bond:when two or more atoms share or transfer electrons to form a As you remember from the previous lesson, the atom is made of three types of subatomic particles: Other examples of ionic bonds are iron oxide (Fe2O3
For example, the transfer of an electron sodium to chlorine can Show how covalent bonding occurs in each of the following pairs of atoms Atoms may Number of atoms in molecules 2 atoms 3 atoms 3 atoms 4 atoms 4 atoms 5 atoms
Ch 3 Chemical bonds The atomic theory is the premise for the concept of chemical bonds Table 3 1 Some examples of compounds with a benzoyl radical At that stage, valence was merely a kind of index to indicate the ratio of atoms