Advertisements
Advertisements
Question
Fill in the blank in the following sentence:
Two atoms of the same element combine to form a molecule. The bond between them is known as ................ bond.
Advertisements
Solution
Two atoms of the same element combine to form a molecule. The bond between them is known as a covalent bond.
APPEARS IN
RELATED QUESTIONS
Draw the electron-dot structure of a hydrogen chloride molecule.
Draw the electron-dot structure of H2O compound and state the type of bonding.
Write two points of difference in the structures of diamond and graphite.
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
Complete the following:
When the nuclei of two different reacting atoms are of ______ mass, then a bond so formed is called ______ covalent bond. (equal, unequal, polar, non-polar)
Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attain such a configuration in this manner to form its compounds. Name the type of bonds formed in ionic compounds and in the compounds formed by carbon. Also explain the reason why carbon compounds are generally poor conductors of electricity.
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 |
Explain the following term with example.
Covalent bond
The covalent bond in which the electrons are shared equally between the combining atoms.
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
The type of bonding in X will be
Which of the following is a common characteristic of a covalent compound?
What is the difference between :
Ionic compounds and covalent 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?
Number of valence electrons in a carbon atom is _______.
Write an Explanation.
Alkene
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
In covalent bond formation, the sharing of ______ electrons takes place in their outermost shell.
The number of single and double bonds present in a molecule of benzene (C6H6) respectively, are ______.
