Advertisements
Advertisements
प्रश्न
State the reason to explain why covalent compounds "have low melting and boiling points."
Advertisements
उत्तर
Covalent compounds are formed by covalent bonds and it has been found that the intermolecular forces of attraction in covalent compounds are weak. Thus, their melting and boiling points are quite low.
APPEARS IN
संबंधित प्रश्न
Out of KCl, HCl, CCl4 and NaCl, the compounds which are not ionic are:
(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4
One of the following compounds is not ionic in nature. This compound is:
(a) Lithium chloride
(b) Ammonium chloride
(c) Calcium chloride
(d) Carbon tetrachloride
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.
What is the difference between ionic compounds and polar covalent compounds?
Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.
Hydroxyl ion
The carbon compound is used in daily life is ______.
State the type of bonding in the following molecule.
Water
The molecular masses of a carbon compound spread over a range of _______.
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
It is observed that covalent compounds are had conductors of electricity. Give reason.
