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Genesis of periodic classification:-
(1) Doberneir triad / law of triad:- He arranged similar elements in groups of three an
Modern periodic law:- It is based upon Moseley’s saying that physical and chemical properties of elements are function of their atomic number.
Chemical Properties and Periodicity:-
(1) Valency:- (a) It is the combining capacity of an element.
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
Elements:- An element is usually defined as the simplest form of a pure s
Classification of magnetic materials:
Diamagnetic substances: Diamagnetic substances ar
Classification of antibiotics
Broad spectrum antibiotics:- They kill or inhibit a wide range of gram-positive and gram-negat
d and f-block Elements
The elements in the periodic table present in between the s and p-block elements (Representative Elements) are transi
Periodic Properties:- The properties which are directly / indirectly related to their electronic configuration and which show a regular gradation when we move
Classification of Copolymers:
They are classified as:
Classification based upon source of ava
Crystalline Solids:
Amorphous solids are very useful but most of the solids are crystalline in nature due to thermodynamically favorable conditions
Introduction of alcohols
The hydroxy derivatives of aliphatic hydrocarbons are called alcohols. When one, two or more hydrogen atoms of a hyd
Ionisation Energy / Ionisation Enthalpy (I.E.)
It is amount of energy required to remove most loosely bound electron from gaseous atom to form gase
Classification:
Haloalkanes can be classified into three groups:
Primary halogenoalkanes
In a primary (1°
Energy bands in solids consists of three parts
Valence &n
The process of grouping living organisms into convenient categories based on simple characters is known as Biological Classification.
Firstly
Classification of ether
Ethers are known as symmetrical, if the two alkyl or aryl groups attached to the oxygen atom are same.
Classification of solids – Solids can be classified into two types on the basis of the arrangements of their constituent particles (atoms, molecules or ions). These
Attemps to Classify
In this chapter, we will describe Plantae kingdom under Algae, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms. At pres
There are different types of classification of organisms
1. Artificial Classification
2. Natural CLassification
3. Phylogene
Classification of Drugs
On the basis of Pharmacological Action:- It is useful for docto
Some basic concepts in chemistry:-
MatteràIts anything that occupies space, possesses mass and can be fel
Electron Gain Enthalpy (EGE):-It is the amount of energy released a (absorbed in some few cases) when an extra electron is added to isolated gaseous neu
Ionic size : - distance from the centre of the nucleus upto that place. Where the nuclear charge it being feet.
Ion is of two types
Electronegativity:- Tendency to attract the shared pair of electron towards one of the combining atom in a covalently bonded molecule?
Taxonomical Aids
Taxonomy is the branch of biology that deals with identification, naming, and classification of organisms.
Ta
Classification of Proteins:-
(A). On the basis of Molecular Structure – On the basis of their molecular structure proteins a
Mode of classification:
Here,individuals are classified on the basis of:
1) Arrangement of cells (level of organization
Phylogenetic classification system
Numerical Taxonomy: It is based on all morphological and observable ch
Classification of reaction:- (On the basis of rate (speed))
1. Very fast reaction:- Which takes place instantane
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