answr
Login
Join Now
chemistry

Which of the following non-metal is hard yet brittle?

A

Graphite

B

Selenium

C

Sulphur

D

Diamond

Answer

Diamond is the hardest substance known to man with a hardness of 10.0. It is brittle sometimes because it grows in diamond shape crystals, sometimes there are tiny cracks or flaws in the diamond and a hard strike against the crack of course will cause the diamond to crack into many pieces. Crystalline materials have planes of variable shear and normal strengths hence, they fail on fracture mechanism. Also, crystalline nature makes them extremely strong at surface resisting scratch.

Answered By

toppr

How satisfied are you with the answer?
This will help us to improve better
More Questions by difficulty

Related Questions to study

Which one is the softest solid non-metal among the following?
Diamond, Oxygen, Sulphur, Bromine

View Answer

Name a non-metal that is hardest naturally occurring substance. 

View Answer

Non-metals are:

View Answer

Rods of carbon and copper are hammered simultaneously. Which property of carbon is responsible for carbon rod breaking down into pieces?

View Answer

Name the naturally occuring hardest substance known. 

View Answer

Diamond and boron are soft non-metals.

View Answer

Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces. Which of the following is a non-metal?

View Answer

Name the non-metal and its natural form which is the hardest substance. 

View Answer
View Answer

VIEW MORE