Advertisements
Advertisements
प्रश्न
Explain the following:
Covalent compounds are generally gases or liquids or soft solids.
Advertisements
उत्तर
The forces of attraction between the molecules of covalent compounds are weak because the molecules are neutral. So, they are generally gases or liquids or soft solids.
APPEARS IN
संबंधित प्रश्न
The molecules having triple bond in them are:
(a) oxygen and ethyne
(b) carbon dioxide and ammonia
(c) methane and ethene
(d) nitrogen and ethyne
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.
Answer the following question.
What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds:
(i) poor conductors of electricity? and
(ii) have low melting and boiling points? What happens when this compound burns in oxygen?
Write an Explanation.
Alkyne
Give an example for each of the following statement
A compound in which two Covalent bonds are formed.
Identify the incorrect statement and correct them.
- Like covalent compounds, coordinate compounds also contain charged particles (ions). So they are good conductors of electricity.
- Ionic bond is a weak bond when compared to Hydrogen bond.
- Ionic or electrovalent bonds are formed by mutual sharing of electrons between atoms.
- Loss of electrons is called Oxidation and gain of electron is called Reduction.
- The electrons which are not involved in bonding are called valence electrons.
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
Statement (A): Covalent compounds are bad conductors of electricity.
Reason (B): Covalent compounds contain charged particles (ions)
