Answer
Verified
402.3k+ views
Hint:
The substance that allows flow of current is known as the good electric conductors. The substance that does not allow the flow of current is known as the bad electric conductor.
Complete step by step answer:
The atom is divided into two parts, nucleus, and the electros. The nucleus is the central positive charge of the atom. The whole mass of the atom is situated in the nucleus. Electrons are the negatively charged particles of the atom. The electrons revolve around the nucleus of the atom. Electrons revolve around the nucleus in different shells. The electrons present in the outermost shell of the atom are known as the valence electrons.
The elements based on valence electrons of the periodic table are classified in the groups of:
1. Metals: The metals have free electrons.
2. Non-metals: The non-metals do not have free electrons.
3. Semiconductor: The group of elements that do not belong to the above two categories are known as the semiconductors.
The metals are those materials which have one two or three valence electrons in the outermost shell. These free electrons are responsible for flow of heat and current.
The non-metallic materials do not have free electrons. Thus, these are not good conductors of heat and electricity. Glass is the example of the non-metals. So, it is a bad conductor of heat and electricity.
Note:
The conductivity of the semiconductors lies in between the conductivity of the metals and non-metals. The conductivity of a semiconductor is more than that of the non-metals and less than the metals.
The substance that allows flow of current is known as the good electric conductors. The substance that does not allow the flow of current is known as the bad electric conductor.
Complete step by step answer:
The atom is divided into two parts, nucleus, and the electros. The nucleus is the central positive charge of the atom. The whole mass of the atom is situated in the nucleus. Electrons are the negatively charged particles of the atom. The electrons revolve around the nucleus of the atom. Electrons revolve around the nucleus in different shells. The electrons present in the outermost shell of the atom are known as the valence electrons.
The elements based on valence electrons of the periodic table are classified in the groups of:
1. Metals: The metals have free electrons.
2. Non-metals: The non-metals do not have free electrons.
3. Semiconductor: The group of elements that do not belong to the above two categories are known as the semiconductors.
The metals are those materials which have one two or three valence electrons in the outermost shell. These free electrons are responsible for flow of heat and current.
The non-metallic materials do not have free electrons. Thus, these are not good conductors of heat and electricity. Glass is the example of the non-metals. So, it is a bad conductor of heat and electricity.
Note:
The conductivity of the semiconductors lies in between the conductivity of the metals and non-metals. The conductivity of a semiconductor is more than that of the non-metals and less than the metals.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Assertion The resistivity of a semiconductor increases class 13 physics CBSE
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
The branch of science which deals with nature and natural class 10 physics CBSE
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
What is BLO What is the full form of BLO class 8 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The cell wall of prokaryotes are made up of a Cellulose class 9 biology CBSE
Select the word that is correctly spelled a Twelveth class 10 english CBSE
a Tabulate the differences in the characteristics of class 12 chemistry CBSE