Covalent bonding

Covalent bonding

by Della H

Multiple Choice

What can be generalized about covalent bonds?

• Electrons will be exchanged.
• Electrons will be transferred.
• Electrons will be given and taken.
• Electrons will be shared.

Multiple Choice

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal & 1 Metal
• 2 Metals
• 2 Noble Gases

Multiple Choice

Of these 3 molecules, which represents a covalent bond?

• O₂

• NaI₂

• NaCl

• MgO

Multiple Choice

How many electrons are shared in a double bond?

• 2
• 4
• 6
• 8

​Methane (CH₄) 

​Ethane (C₂H₆)

​Ethene (C₂H₂)

Formulae of covalent compounds

• ​The formulae of covalent compounds gives the exact number of each atom present in one molecule of the compound i.e. molecular formula. For example, CO_2, H₂O, NH₃ (this is also its their empirical formula)

• ​The name can also indicate molecular formula by using prefixes.

​Example:

​Carbon monoxide (CO)

​Carbon tetrachloride

​Dinitrogen tetroxide

​Recap

1. ​Covalent compounds are formed from bonding between non metals

2. ​Covalent compounds can form single, double or triple bonds.

3. ​The formula of covalent compounds shows the exact number of each atom present

4. ​The name of compound can be used to derive its formula