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प्रश्न
Write any three features and give two examples of covalent compounds
उत्तर
Features:
1)Covalent compounds possess a particular structure in space like tetrahedral, octahedral etc.
2)They are usually of low melting points and boiling points
3) They are of poor electrical and thermal conductivity.
Examples: Methane (CH4), Water (H2O)
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संबंधित प्रश्न
What are covalent compounds?
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
What type of bonds are present in CH4 molecule? Draw their electron-dot structures.
Fill in the following blank with suitable word:
The general formula CnH2n for cycloalkanes is the same as that of ...........
will CS2 conduct electricity or not?
give reason for your choice.
Give the formula of the compound that would be formed by the combination of the following pair of elements:
Al and Cl2
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
Give two example in following case:
Solid covalent compounds
Explain the Structural isomerism term with example.
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
Give examples for the following:
Two liquid non polar compounds.
Choose the correct answer from the options given below
Condition favorable for formation of a covalent bond is
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
X is likely to have a :
What is the difference between a polar covalent compound and a non-polar covalent compound?
Number of valence electrons in a carbon atom is _______.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H} \end{array}\] |
Which of the following is the formula of Butanoic acid?
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.
State the reasons, why carbon cannot
- Lose four electrons to form C4+ cation and
- Gain four electrons to form C4- anion.
How does carbon overcome this problem to form compounds?
