Advertisements
Advertisements
प्रश्न
What do you understand by redox reactions?
Advertisements
उत्तर
Transfer of electron(s) is involved in the formation of an electrovalent bond. The electropositive atom undergoes oxidation, while the electronegative atom undergoes reduction. This is known as a redox reaction.
संबंधित प्रश्न
Give electron dot diagram of the following:
nitrogen
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
What type of bond is formed between two atoms, when the electronegative difference between them is zero?
Element X is a metal with a valency 2; Y is a non-metal with a valency 3.
(a) Write an equation to show how Y forms as ion
(b) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
State one observation which shows that atom is not indivisible.
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.
Why do `""_17^35"CI"` and `""_17^37"CI"` have the same chemical properties? In what respect do these atoms differ?
Name the following:
Metal with valency 2
Give a reason
Physical properties of isotopes are different.
Give reason
Argon does not react.
Explain the following:
Carbon-12 and carbon-14 both show similar chemical properties.
Identify the following reaction as either oxidation or reduction:
O + 2e- → O2-
Identify the following reaction as either oxidation or reduction:
Zn → Zn2+ + 2e-
Number of valence electrons in carbon is ______.
Draw the electron distribution diagram for the formation of Carbon di oxide (CO2 ) molecule.
Why are Noble gases inert in nature?
______ is the only noble gas that does not have eight electrons in its valence shell.
Choose the odd one out and write the reason:
| Name of compound | Type of compound | |
| a. | Sodium chloride | ______ |
| b. | ______ | co-ordinate covalent compound |
| c. | Methane | ______ |
| d. | Fluorine molecule | ______ |
