Advertisements
Advertisements
Question
What do you understand by redox reactions? Explain oxidation and reduction in terms of loss or gain of electrons.
Advertisements
Solution
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 process.
Oxidation: In the electronic concept, oxidation is a process in which an atom or ion loses electron(s).
Zn → Zn2+ + 2e-
Reduction: In the electronic concept, the reduction is a process in which an atom or ion accepts electron(s).
Cu2+ + 2e-→ Cu
RELATED QUESTIONS
How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
How many electrons are required by each atom mentioned in (a) to attain the nearest noble gas configuration?
How are X-rays produced?
State one observation which shows that atom is not indivisible.
Name an element which does not contain neutron.
How do atoms attain noble gas configurations?
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reducing agent.
Give the orbital diagram of the following:
Methane
Draw the electron distribution diagram for the formation of Carbon di oxide (CO2 ) molecule.
Match the following:
| 1. | Monoatomic gaseous atom | a. | Electrovalent bond |
| 2. | Octet rule | b. | Benzene |
| 3. | Ionic bond | c. | Water |
| 4. | Non-polar solvent | d. | Electronic theory of valence |
| 5. | Polar solvent | e. | Noble gases |
Write the basic concept of Kossel – Lewis theory.
