Friends, in our previous article, we have given complete information about the substance. In today’s article we will(element in Hindi)will learn about What are the elements, how they were discovered, all these topics will be discussed in detail.
What is an element – What is element in Hindi
definition of elementElements are those substances which are composed of the same type of particles or atoms.
nuclear- Atom is the smallest particle of matter. in whose nucleus proton And neutron They are held together by a very powerful force. around the nucleus electron Walk around in closed classrooms.
Discovery of Elements – Discovery of element in Hindi
Robert Boyel First used the word element in 1961 AD. But the word element was first introduced by a French scientist. Antoine Laurent Lavoisier Defined as follows – Element is the basic form of matter which cannot be broken down into other simpler substances by chemical reaction. That is, the substance which cannot be divided into two or more simpler substances by any physical or chemical method is called element. For example, gold, silver, copper, iron, sodium, potassium, hydrogen, oxygen etc.
Thus an element is made up of only one type of atoms. Till now 114 elements have been discovered in which 92 elements are found in nature in free state or combined state while the remaining 22 elements have been artificially made in various laboratories. most elements
Elements 11 are solid at room temperature, are gases at room temperature while two elements mercury and bromine are liquid at room temperature. Gallium and cesium are two such elements that become liquid at a temperature slightly above room temperature.
Classification of Elements
Elements are divided into three classes on the basis of their properties, metals, non-metals and metalloids.
Metal element in hindi
Elements which are good conductors of electricity and heat are generally found in solid state and in which आघातवर्ध्यता (malleability) And ductility The properties of metals are found. For example, gold, silver, iron, copper, sodium, potassium, mercury, tin etc.
Examples of metals. Generally all metals are found in solid state whereas mercury, with exception, is found in liquid state at room temperature.
Properties of metal – Properties of metal
Mainly the following properties are found in the metal
(i) They are shiny and have a silvery whiteness or yellowish gold color.
(ii) They are good conductors of heat and electricity. Silver and copper are the best conductors of heat and electricity.
(iii) They are ductile. Gold provides the highest tensile strength.
(iv) They are malleable i.e. they can be beaten and molded into fine sheets. Gold and silver are the most malleable.
(v) Generally, metals are hard, whereas sodium and potassium are soft with exceptions, which can be easily cut with a knife.
(vi) Their melting and boiling points are usually high.
Non-Metal Element in Hindi
Elements that are poor conductors of electricity and heat malleability and tensile Properties that are not found, are called non-metals. Examples of non-metals are hydrogen, oxygen, iodine, carbon (diamond and graphite), bromine, chlorine, phosphorus, sulfur, etc. At room temperature, carbon, phosphorus, sulfur, etc. are solids, while bromine is a liquid and hydrogen, oxygen, etc. are gases.
Properties of non-metals – Properties of non-metals
The following properties are found mainly of non-metals-
(i) They are of different colours.
(ii) They are poor conductors of heat (heat) and electricity, but in two allotropes of carbon-diamond and graphite, where diamond is a poor conductor of electricity, graphite is a good conductor of electricity.
(iii) Non-metals are shiny like metals, non-metallic, ductile and not resonant. Iodine, with the exception, has shiny surfaces.
(iv) They have generally low melting and boiling points.
(v) They are generally soft. Exceptionally, diamond, an allotrope of carbon, is extremely hard.
उपधातु(Metalloid element in hindi)
Those elements which have properties of both metals and non-metals are called metalloids. Examples of metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, etc.
Names of all elements discovered so far
65.टरबियम (Terbium) )
68.अरबियम (Erbium) )
this article”What is the element called? Complete information about elements- What is element in Hindi“Thank you so much for reading I hope. That you must have got to know a lot new from this article.