Question
Classify the elements based on their property of conductivity with suitable examples.
✓
Answer
Elements can be classified into three categories on the basis of their conductivity :
(1) Metallic elements: They have high values of electrical conductivity.
For example, Copper (Cu), Aluminium (Al), Silver (Ag).
(2) Non-metallic elements: They have low values of electrical conductivity.
For example, Oxygen $\left( O _2\right)$, Nitrogen $\left( N _2\right)$, Chlorine $\left( Cl _2\right)$.
(3) Metalloids: The values of their electrical conductivity is lower than metals but higher than non-metals.
For example, Silicon (Si), Germanium (Ge).
(1) Metallic elements: They have high values of electrical conductivity.
For example, Copper (Cu), Aluminium (Al), Silver (Ag).
(2) Non-metallic elements: They have low values of electrical conductivity.
For example, Oxygen $\left( O _2\right)$, Nitrogen $\left( N _2\right)$, Chlorine $\left( Cl _2\right)$.
(3) Metalloids: The values of their electrical conductivity is lower than metals but higher than non-metals.
For example, Silicon (Si), Germanium (Ge).
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Define magnification produced by a spherical mirror. What does its value indicate? Also mention its formula. Discuss about its sign for real and virtual image.
A glass slab made of a material of refractive index n1is kept in a medium of refractive index n2. A light ray is incident on the slak Draw the path of ray of light emerging from the glass slab. If
(a)n1>n2 (b) n1= n2(c) n1 < n2
(a)n1>n2 (b) n1= n2(c) n1 < n2
How many times would be an aqueous solution of pH = 2 be more acidic than aqueous solution of pH = 4?
State the properties of carbon compounds.###State the properties of covalent compounds.
Dharmendra is a welder, working at Amit's house. After electric welding done with naked eyes, he used a grinder to smoothen the welding joints. Accidentally, some particle fell into his eye. He was then crying due to pain. Amit took him to an eye hospital by a taxi. The doctor used a device connected to two electric wires to remove the particle from his eye. Dharmendra inquired what happened to his eye and what device did the doctor use to remove the particle from his eye. Amit as a science student of class X explained to Dharmendra and advised him to be careful in future as he had a responsible risky job of welding.
(1) Which particle fell into Dharmendra's eye while welding? What precautions should Dharmendra take while doing electric welding and grinding work?
(2) What device was used by the doctor to remove the particle?
(3) What values do you learn from Amit during this episode?
(1) Which particle fell into Dharmendra's eye while welding? What precautions should Dharmendra take while doing electric welding and grinding work?
(2) What device was used by the doctor to remove the particle?
(3) What values do you learn from Amit during this episode?
State the general properties of ionic compounds.
Write a short note on bleaching powder.###Explain the preparation of bleaching powder with chemical equation and also write its uses.
A hot plate of an electric oven connected to a $220 \ V$ line has two resistance coils A and B , each of $24 \Omega$ resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases?
→Vishva noticed in a dhaba around 50 bulbs, each of 100 W all were glowing. She calculated the cost of electricity consumed in one hour and told the dhaba owner to reduce the expenses and at the same time save electricity by using CFL bulbs instead of ordinary filament-type bulbs.
(1) What would be the cost of electric energy if 50 bulbs, each of 100 W , are used for one hour? 1 unit costs ₹ 5 .
(2) What is a CFL?
(3) What value did Vishva display in the above case?
(1) What would be the cost of electric energy if 50 bulbs, each of 100 W , are used for one hour? 1 unit costs ₹ 5 .
(2) What is a CFL?
(3) What value did Vishva display in the above case?
