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प्रश्न
Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
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उत्तर
Diamond is the hardest, naturally occuring material known. Owing to its rigid structure, it can be used as glass cutters. Whereas graphite is a layered structure of carbon atoms and is very soft so, it cannot be used for making cutting tools.
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संबंधित प्रश्न
Give one example, state what are covalent compounds?
Which inert gas does the H atom in HCl resemble in electron arrangement?
Draw the electron-dot structure of HCl compound and state the type of bonding.
Draw the electron-dot structure of NH3 and state the type of bonding.
Why are covalent compounds generally poor conductors of electricity?
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
You can buy solid air-freshners in shops. Do you think these substance are ionic or covalent? Why?
What is the difference between ionic compounds and covalent compounds?
Complete the following:
When the nuclei of two different reacting atoms are of ______ mass, then a bond so formed is called ______ covalent bond. (equal, unequal, polar, non-polar)
Give two example in following case:
Solid covalent compounds
Give examples for the following:
Two liquid non polar compounds.
Give examples for the following:
Two gaseous non polar compounds.
Which of the following is a common characteristic of a covalent compound?
State the type of bonding in the following molecule.
Water
The correct structural formula of butanoic acid is -
The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2, 6 |
| Q | 2, 8, 1 |
| R | 2, 8, 7 |
| S | 2, 8, 8 |
- Identify which element(s) will form covalent bonds with carbon.
- “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
In covalent bond formation, the sharing of ______ electrons takes place in their outermost shell.
Name the following:
\[\ce{CH3 - CH2CH = CH2}\]
