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प्रश्न
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.
उत्तर
- P and R
- Carbon has a valency four or Tetravalency & Catenation.
APPEARS IN
संबंधित प्रश्न
State the type of bonding in the following molecule.
Water
What is buckminsterfullerene?
State any two uses of diamond.
Give the characteristic properties of covalent compounds.
Match the pairs.
| Group 'A' | Group 'B' |
| a. C2H6 | 1. Unsaturated hydrocarbon |
| b. C2H2 | 2. Molecular formula of an alcohol |
| c. CH4O | 3. Saturated hydrocarbon |
| d. C3H6 | 4. Triple bond |
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Water
Explain the following briefly:
Sodium chloride dissolves in water but carbon tetra chloride is insoluble in water.
Give examples for the following:
Two liquid non polar compounds.
In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?
Give reason as to why hydrogen chloride can be termed as a polar covalent compound.
In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?
Name greenish-yellow gas which also bleaches.
Write the molecular formula of the given compound.
Propylene
Write a short note.
Characteristics of carbon
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
Give an example for each of the following statement.
Formation of coordinate covalent bond between NH3 ➝ BF3 molecules
Which of the following is the purest form of carbon?
`"CH"_3 - "CH"_2 - "OH" overset("Alkaline""KMnO"_4 + "Heat")(->) "CH"_3 - "COOH"`
In the above given reaction, alkaline KMnO4 acts as
Which of the following compound(s) possesses a high melting point?
Explain dipole (polar) molecule by taking hydrogen chloride as an example.
