Table of Contents
Table of Contents
- Electronegative and Electropositive Atoms
- Examples of Chemical Formulae (Give & Take of Electrons):
- Magnesium Chloride
- Aluminium Oxide
- Summary
- Did You Know?
- What’s Next?
In the previous segment, we learned how to write the chemical formula of compounds
formed by sharing of electrons – hydrogen chloride and hydrogen sulphide.
In this segment, we will learn what Electronegative and Electropositive atoms are. We will also learn how to write the chemical formulas of compounds formed by the accepting and donating of electrons – magnesium chloride and aluminium oxide.
What are Electronegative and Electropositive atoms?
We know that an atom can gain, lose or share electrons when forming a compound. Based on this behaviour, atoms can be classified as electronegative and electropositive atoms.
An atom that has a tendency to gain electrons and acquire a negative charge is known as an Electronegative atom.
An atom that has a tendency to lose electrons and acquire a positive charge is known as an Electropositive atom.
Writing the chemical formula for compounds (Give and Take of electrons)
Valency of elements chart
|
Name of Element |
Symbol |
Valency |
|
Hydrogen |
H |
1 |
|
Helium |
He |
0 |
|
Lithium |
Li |
1 |
|
Beryllium |
Be |
2 |
|
Boron |
B |
3 |
|
Carbon |
C |
4 |
