General Properties Of The Transition Elements
Chapter Name : The D- And F- Block Elements |
Sub Topic Code : 102_12_08_03_04 |
Topic Name : General Properties Of The Transition Elements |
|
Sub Topic Name : Oxidation States |
|
Introduction
•
One of the notable features of a transition element is
the great variety of oxidation states it may show in its compounds.
•
The elements which give the greatest number of
oxidation states occur in or near the middle of the series. Ex: Manganese,
shows all the oxidation states from +2 to +7.
•
The lesser number of oxidation states at the extreme
ends stems from either too few electrons to lose or share (Sc, Ti) or too many
d electrons.
• At the other end, the
only oxidation state of zinc is +2
Pre-Requisites:
Periodic table, elements
Activity:
Various precious metals such as silver, gold and
platinum and industrially important
Real Life Question:
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Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Group | Group is the vertical column on the periodic table which contains elements having the similar properties |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Iron rod Gold coin | Iron and Gold are both transition metals |
Real life uses :
To make jewellery, utensils
Places to visit :
Bank, jewellery shop
Practical examples around us
| Examples | Explainations |
|---|---|
| Gold coins | • Various precious metals such as silver, gold and platinum and industrially important |
What you learn in Theory:
•
One of the notable features of a transition element is
the great variety of oxidation states it may show in its compounds.
•
The elements which give the greatest number of
oxidation states occur in or near the middle of the series. Ex: Manganese,
shows all the oxidation states from +2 to +7.
•
The lesser number of oxidation states at the extreme
ends stems from either too few electrons to lose or share (Sc, Ti) or too many
d electrons.
At the other end, the
only oxidation state of zinc is +2
What you learn in Practice:
•
One of the notable features of a transition element is
the great variety of oxidation states it may show in its compounds.
•
The elements which give the greatest number of
oxidation states occur in or near the middle of the series. Ex: Manganese,
shows all the oxidation states from +2 to +7.
•
The lesser number of oxidation states at the extreme
ends stems from either too few electrons to lose or share (Sc, Ti) or too many
d electrons.
At the other end, the
only oxidation state of zinc is +2