Which element is a poor conductor of heat

Free

Table of Contents Show

Study related questions
What elements is a poor conductor?
What is an example of a poor heat conductor?
Which elements are poor conductor of heat and electricity?
Is copper a poor conductor of heat?

10 Questions 10 Marks 10 Mins

Latest UPRVUNL AE Updates

Last updated on Sep 22, 2022

The Uttar Pradesh Rajya Vidyut Utpadan Nigam Limited (UPRVUNL) has released the UPRVUNL AE Answer Key for the CBT stage of the exam. The CBT exam was conducted from 16th Jul to 17th Jul 2022. The UPRVUNL will soon be going to declare the result of the UPRVUNL AE too. The selection process of the AE depends on two rounds - Computer Based Test (CBT) and Interview & Document Verification. The selected candidates will get a decent salary range between Rs. 56,100 to Rs. 177,500.

Ace your Physics preparations for Current Electricity with us and master General Science for your exams. Learn today!

Anonymous Student

6 months ago

Which one of the following elements is a poor conductor of heat and electricity? a. Chromium b. Iodine c. Copper d. Aluminum e. Nickel

All replies

Expert Answer

6 months ago

The correct answer is option b.

Chromium is a transition metal and it conducts heat and electricity. It is not considered a good conductor in comparison to silver, copper, and other metals but it conducts electricity fairly. Hence, this option is incorrect.
Iodine is a nonmetal and therefore, it is an insulator that is, relatively, a poor conductor of electricity and heat. Hence, this option is correct.
Copper is an excellent conductor of heat and electricity and easily allows heat to pass through it. Hence, this is an incorrect option.
Aluminum has free-moving unpaired electrons in its outer shell which makes it a good conductor of heat and electricity. Hence, this option is not correct.
Nickel has valence electrons that are loosely bonded. The flow of delocalized electrons helps in conducting heat and electricity which makes it a good conductor. Hence, this is an incorrect option.

How Expert Q&A works:

Ask your study questions to our Experts.

Receive an answer explained step-by-step.

Get your answer as fast as 30 minutes.

All nonmetallic elements are generally poor conductors of heat and electricity. There are only 17 nonmetallic elements, while more than 75 percent of the known elements are either pure metals or metalloids, which are better conductors of heat and electricity to a varying degree.

Other than being poor conductors, many of the nonmetallic elements share very little else in common. Of the 17 nonmetallic elements, only six of them are solid in their natural state. Most nonmetallic solids are very dull and feel quite light due to their relatively low density. This includes phosphorous, sulfur, selenium and carbon, all of which are usually hard and brittle. Carbon is one exception, as pure carbon can take on two very different forms with different degrees of hardness. One of these is diamond, which is the hardest mineral found in nature. The other form is graphite, which is one of the only nonmetallic substances that is able to conduct electricity.

There are 11 nonmetallic elements that are gases at room temperature, including all of the noble gases, which are technically nonmetallic. Some of the gaseous nonmetallic elements are hydrogen, oxygen, nitrogen and neon. There is also one nonmetallic element that is a liquid at room temperature, bromine.

What elements is a poor conductor?

Nonmetals are poor conductors of heat and electricity, because electrons are not free to move. Nonmetals are found to the right of the stair-step line, except for hydrogen which is in group 1. Group 18 are the noble gases, which are all nonmetals. The only exist as isolated atoms.

What is an example of a poor heat conductor?

Metals and stone are considered good conductors since they can speedily transfer heat, whereas materials like wood, paper, air, and cloth are poor conductors of heat.

Which elements are poor conductor of heat and electricity?

Nonmetals are (usually) poor conductors of heat and electricity, and are not malleable or ductile; many of the elemental nonmetals are gases at room temperature, while others are liquids and others are solids.

Is copper a poor conductor of heat?

Copper, steel, and silver, being metals are good conductors of heat. Non-metals are bad conductors of heat. For example, wood, paper, air, and cloth are poor conductors of heat.