Advertisements
Advertisements
प्रश्न
The electronic configurations of two elements A and B are given below:
| A | 2, 6 |
| B | 2, 8, 1 |
(a) What type of chemical bond is formed between the two atoms of A?
(b) What type of chemical bond will be formed between the atoms of A and B?
उत्तर
(a) Two atoms of A can form covalent bond between them by sharing two electrons from each atom. This allows them to complete their octets and get stabilised. The molecule so formed is A=A.
(b) Atoms A and B may react to form ionic bond by transfer of two electrons from two atoms of B to form an ionic compound AB2.
APPEARS IN
संबंधित प्रश्न
List three characteristic properties of covalent compounds.
State one major difference between covalent and ionic bonds and give one example each of covalent and ionic compounds.
Fill in the following blank with suitable word:
The form of carbon which is known as black lead is ...........
Draw the electron-dot structure of CO2 compound and state the type of bonding.
The number of covalent bonds in pentane (molecular formula C5H12) is:
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
Write answer as directed.
Saturated hydrocarbons are classified into three types. Write these names giving one example each.
Give examples for the following:
Two gaseous non polar compounds.
Draw the electron dot diagram and structure of magnesium chloride.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If the compound formed between A and B is melted and an electric current is passed through the molten compound, the element A will be obtained at the ______ and B at the ______ of the electrolytic cell.
Covalent bonds can be single, double or triple covalent bonds. How many electrons are shared in each? Give an example of each type.
Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound, But, both conduct electricity in their aqueous solutions. Explain.
Give an example of the covalent bond formed by
(i) Similar atoms (ii) Dissimilar atoms
Name the types of Hydrocarbons.
The molecular masses of a carbon compound spread over a range of _______.
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Discuss in brief about the properties of coordinate covalent compounds.
Which of the following compound(s) possesses a high melting point?
"Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or losing the valence electrons in order to attain noble gas configuration." Give reasons to justify this statement.
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
