Valency
Chapter Name : Structure Of The Atom |
Sub Topic Code : 102_09_04_04_01 |
Topic Name : Valency |
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Sub Topic Name : Valency |
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Introduction
• The electrons present in the outermost shell of an atom are known as valence electrons. • Outermost shell can have a maximum of 8 electrons. • Each atom likes to be stable therefore it reacts with other atoms to get a stable 8 outermost valency. • Atoms can share, gain or lose electrons. • Valency of an atom depends on the number of electrons in the outermost shell.
Pre-Requisites:
Daltons atomic theory, molecules, electrons
Activity:
Atoms are the smallest units of any substance.
Real Life Question:
What does an atom look like?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Atom | Smallest unit of a compound. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A racing track | Centre of the track is the nucleus having protons and neutrons, the running tracks are the orbits and the racers are the electrons. |
Real life uses :
Atoms make up all substances.
Places to visit :
Laboratory.
Practical examples around us
| Examples | Explainations |
|---|---|
| A racing track | Centre of the track is the nucleus having protons and neutrons, the running tracks are the orbits and the racers are the electrons |
What you learn in Theory:
• The electrons present in the outermost shell of an atom are known as valence electrons. • Outermost shell can have a maximum of 8 electrons. • Each atom likes to be stable therefore it reacts with other atoms to get a stable 8 outermost valency. • Atoms can share, gain or lose electrons. Valency of an atom depends on the number of electrons in the outermost shell.
What you learn in Practice:
Atoms are the smallest unit of any substance.