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प्रश्न
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
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उत्तर
consist of molecules
An ionic compound has a high melting point, is always soluble in water and conducts electricity when it is in the molten state. Covalent compounds consist of molecules
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संबंधित प्रश्न
State the reason to explain why covalent compounds "have low melting and boiling points."
Write any three features and give two examples of covalent compounds
Why are most carbon compounds poor conductors of electricity?
Buckminsterfullerene is a spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
- How many hexagons of carbon atoms are present in one molecule of buckminsterfullerene?
- How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
One of the following is not an allotrope of carbon. This is:
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
Write an Explanation.
Alkene
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
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Consider the coordination compound, K2[Cu(CN)4]. A coordinate covalent bond exists between:
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.
