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प्रश्न
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
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उत्तर
Covalent bond is the chemical bond present in an H2 molecule as one hydrogen atom shares its electrons with another hydrogen atom.
The electron-dot structure is:
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संबंधित प्रश्न
Why covalent compounds are different from ionic compounds?
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
Friedrich Wohler converted an inorganic compound into an organic compound in the laboratory.
Write the name and formula of organic compound formed.
What type of bonding would you expect between Carbon and Chlorine?
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
What are the conditions necessary for the formation of covalent molecules?
Give two example in following case:
Solid covalent compounds
Give two example in following case:
Gaseous non polar compounds
Which element exhibits the property of catenation to maximum extent and why?
The covalent bond in which the electrons are shared equally between the combining atoms.
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
What is the term defined below?
A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
What is the difference between a polar covalent compound and a non-polar covalent compound?
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)
 |
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
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.
Which of the following compound(s) possesses a high melting point?
Name the following:
\[\ce{CH3 - CH2CH = CH2}\]
