Let’s look at the table and fill in the chart. BOND TYPE COLUMNS/GROUPS (choose I, II, III, IV, V, VI, VII) DO THESE SHARED or STEAL ELECTRONS? Example Covalent A B C Ionic D
Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
Why does the number of valence electrons matter?
The number of electrons in the valence shell determines how an element will bond. If two elements share electrons to fill up their valance shells, they are called covalent bonds. If one element “steals” an electron from another element, those elements no longer have equal numbers of protons and electrons and this they are no longer equal, the element with have a charge. We call elements with charge ions. They are now attracted to each other because they have opposite charges; this is called an ionic bond.
We can give an educated guess as to whether an element is likely to bond covalently (share) or ionically (steal) based on where they are on the table. Let’s think about what the columns tell us about the number of valence electrons. If you are an element that is in Group II, you have 2 valence electrons. You would need 6 to complete your shell. How likely is it that another element will share 6 electrons? I think it’s more likely that the other element will steal 2 from you – which will make you an ion and more likely to bond ionically. What do you think?
Let’s look at the table and fill in the chart.
|
BOND TYPE |
COLUMNS/GROUPS (choose I, II, III, IV, V, VI, VII) |
DO THESE SHARED or STEAL ELECTRONS? |
Example |
|
Covalent |
A |
B |
C |
|
Ionic |
D |
E |
F |
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