3. BONDING IN MOLECULES Task What is bonding? What are Valence
Electrons? Define the term Covalent. What is Covalent Bonding?
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4. What is Bonding
Bonding is the linking of atoms between a metal and non metal
and or between two non-metals
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5.
What is Covalent Bonding?
A covalent bond is a strong bond between two non-metal atoms
.
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6. Objective
To explain that a covalent bond arises from a shared pair of
electrons
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7. Concept Of Valence Electrons
The electrons in the outermost shell are the valence
electrons
These are electrons on an atom that can be gained or lost in a
chemical reaction.
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8.
9. VALENCE ELECTRONS AND STABILITY
Many elements are stable when they contain eight electrons in
their valence shell.
www.sciencetutors.zoomshare.com Nitrogen Boron Carbon Chlorine
Sodium Potassium Calcium Valence electron Electron Configuration
Symbol Elements
10. Calculating Valence Electrons Complete the table below:
What are the symbols and valence Electrons of the following
elements? Calcium Carbon Oxygen Potassium Chlorine Aluminium
Magnesium Sodium
11. OCTECTOF VALENCE ELECTRON
What is the symbol of Fluorine?
What is the atomic number of fluorine?
What is the electron configuration of fluorine?
Two fluorine atoms, for example, can form a stable F2 molecule
in which each atom has an octet of valence electrons by sharing a
pair of electrons.
12. OCTECTOF VALENCE ELECTRON
What is the symbol of Fluorine?
What is the atomic number of fluorine?
What is the electron configuration of fluorine?
ANSWERS
Fluorine symbol (F)
Atomic number of fluorine is 9
Electron configuration is 2, 7
13. QUICK QUIZZZZZZZ
Explain how a pair of oxygen atoms can form an O2
molecule.
What is the total valence electron of each atom of oxygen in a
covalent bond?
14. Answers To Quick Quizzzzz
Each atom of oxygen in a covalent bond has a total of eight
valence electrons by sharing two pairs of electrons.
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15.
Covalent means sharing
Complete the table below using your Periodic Table. Write down
examples of non-metals that can share electrons.
Carbon Oxygen Hydrogen Chlorine Example of Non-Metal Example of
Non-Metal
16. Facts About Covalent Bonding
When non-metals react with non-metals they share electrons and
form a covalent bond.
Single Covalent Bond
One pair of shared electrons
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17. Facts About Covalent Bonding
When non-metals react with non-metals they share electrons and
form a covalent bond.
2. Double Covalent Bond
Two pairs of shared electrons
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18. Facts About Covalent Bonding
When non-metals react with non-metals they share electrons and
form a covalent bond.
3. Triple Covalent Bond
Three pairs of shared electrons
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19.
What is Covalent Bonding?
A covalent bond is a form of chemical bonding that is
characterized by the sharing of pairs of electrons between atoms,
and other covalent bonds
20. COVALENT BONDING
To introduce covalent bonding as the strong bonding between
atoms in molecules
What is the Atomic Number Of Chlorine?
How many electrons are there in an atom of Chlorine?
What is the electron configuration of Chlorine?
How many more electrons does chlorine need to have a full outer
shell?
21. COVALENT BONDING
To introduce covalent bonding as the strong bonding between
atoms in molecules
What is the Atomic Number Of Hydrogen?
How many electrons are there in an atom of Hydrogen?
What is the electron configuration of Hydrogen?
How many more electrons does Hydrogen need to have a full outer
shell?