Electronic Configurations And Types Of Elements S- , P- , D- , F- Blocks
Chapter Name : Classification Of Elements And Periodicity In Properties |
Sub Topic Code : 102_11_03_06_01 |
Topic Name : Electronic Configurations And Types Of Elements S- , P- , D- , F- Blocks |
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Sub Topic Name : The S- Block Elements |
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Introduction
• We can classify the elements into four blocks s-block, p-block, d-block, f-block depending on the type of atomic orbitals that are being filled with electrons. Groups 1A and 2A have the s-orbital filled. Groups 3A - 8A have the p-orbital filled. Groups 3B - 2B have the d-orbital filled. The lanthanides and actinides have the f-orbital filled
Pre-Requisites:
Element, periodic properties, classification, electronic configuration, shells, orbital
Activity:
Objects with similar usage or characteristics fall in the same group.
Real Life Question:
Why do certain things have similar characteristics?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Electronic configuration | The distribution of electrons into energy levels of an atom is called the electronic configuration. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A periodic table | Check out the arrangement of elements in the periodic table. |
Real life uses :
Things are classified and grouped according to similar properties between them.
Places to visit :
A classroom, kitchen, garage
Practical examples around us
| Examples | Explainations |
|---|---|
| Tools | Tool used for eating (spoon) is found in the kitchen whereas a hammer is found in the garage or inside toolbox in the storeroom. Similarly elements with similar behavior are groups in the same level. |
What you learn in Theory:
• The s-block elements have similar characteristics mainly because of the similar electronic configuration. The elements of Group 1 (alkali metals) and Group 2 (alkaline earth metals) which have ns1 and ns2 outermost electronic configuration belong to the s-Block Elements. • All are reactive metals with low ionization enthalpies never found pure in nature. • Their compounds are mostly ionic, with the exception of lithium and beryllium.
What you learn in Practice:
Objects grouped into categories have similar properties.