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प्रश्न
Define a chemical bond.
उत्तर
A chemical bond may be defined as the force of attraction between any two atoms, in a molecule, to maintain stability.
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संबंधित प्रश्न
How do atoms attain noble gas configuration?
Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
Why do they exist as monoatoms in molecules?
Match the atomic numbers 4, 14, 8, 15 and 19 with each of the following:
- A solid non-metal of valency 3.
- A gas of valency 2.
- A metal of valency 1.
- A non-metal of valency 4.
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Give reason
Argon does not react.
Complete the following table relating to the atomic structure of some elements.
|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
6 |
|
|
|
|
Cl |
17 |
|
20 |
|
|
|
Na |
|
|
12 |
|
11 |
|
Al |
|
27 |
|
|
13 |
|
S |
|
32 |
16 |
|
|
What do you understand by redox reactions?
Explain the following:
Carbon-12 and carbon-14 both show similar chemical properties.
The one which is composed of all the three kinds of bond.[ionic, covalent and coordinate bond]
