Advertisements
Advertisements
Question
Give one example, state what are covalent compounds?
Advertisements
Solution
Covalent compounds are compounds that are formed by the sharing of electrons between two or more atoms.
Example: Hydrogen (H2) is a covalent compound, where each hydrogen atom shares one electron to form a stable compound.
APPEARS IN
RELATED QUESTIONS
State the reason to explain why covalent compounds "have low melting and boiling points."
What type of bond exist in CCl4?
What type of bond is present in oxygen molecule?
Why does carbon form compounds mainly by covalent bonding?
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
The electronic configurations of three elements X, Y and Z are as follows:
| X | 2, 4 |
| Y | 2, 7 |
| Z | 2, 1 |
(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
What happens when methane (natural gas) burns in air? Write the chemical equation of the reaction involved.
Distinguish between ionic and covalent compounds under the following properties:
(i) Strength of forces between constituent elements
(ii) Solubility of compounds in water
(iii) Electrical conduction in substances
Explain the structure of Hydronium ion.
State the type of bond formed when the combining atom has small E.N. difference.
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?
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Number of valence electrons in a carbon atom is _______.
Write a short note.
Aromatic hydrocarbons
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H} \end{array}\] |
Carbon can neither form C4- cation nor C4 anion. Why?
Show the covalent bond formation in nitrogen molecule.
Explain dipole (polar) molecule by taking hydrogen chloride as an example.
