General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 12)
12.
The hardest substance available on earth is
Discussion:
79 comments Page 3 of 8.
Bitu said:
1 decade ago
Diamond is one of the most stable compounds. This is because there are no free electrons present and each carbon atom forms covalent bonds with 4 other carbon atoms forming tetrahedrons.
Neeraj kumar said:
9 years ago
Diamond is the hardest substance on the earth. It's an allotrope of carbon having all 4 valency satisfied. Due to this, it has quite strong bonding and thus very hard in nature.
Balashekar said:
1 decade ago
Because diamond is stronger than iron because a diamond can be cut other diamond only we can cut iron with the different cutters but for diamond it is not possible.
Sriram said:
1 decade ago
It is so hard that only a other diamond can cut the original diamond ! lesson to learn is: share mutually like carbon atoms in the diamond and lead a rigid life.
Sunny yadav said:
10 years ago
Diamonds are the hardest substance discovered till now it is used for various purposes as cutting difficult glass piece but gold or soon not you cannot do it.
Raushansingh said:
9 years ago
Diamond is the hardest metal in the earth it is naturally occurring substance diamond cut diamond. We know silicon carbide cut hardest substance.
Pooja sharma said:
1 decade ago
Because of tightly presence of carbon bonding between each atom of diamond and its opaque nature diamond is the hardest material than platinum.
Sasi Kumar said:
9 years ago
According to hardness scale, Diamond scaled 10 represents highest hard material, and soft material is talcum powder with hardness number 1.
Sasi Kumar said:
9 years ago
According to hardness scale, Diamond scaled 10 represents highest hard material, and soft material is talcum powder with hardness number 1.
Sanjiv said:
1 decade ago
Due to pure atomic crystal structure it has very strong metallic bond hence it is the hardest one and also used for cutting the glasses.
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