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प्रश्न
What do you understand by redox reactions? Explain oxidation and reduction in terms of loss or gain of electrons.
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 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
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संबंधित प्रश्न
Give electron dot diagram of the following:
nitrogen
State differences between the properties of ionic compounds and covalent compounds.
Explain fractional atomic mass. What is the fractional mass of chlorine?
Name the following:
An element having valency 'zero'
Name the following:
The shell closest to the nucleus of an atom
State the type of bond between Y and Z and give its molecular formula.
State the type of bonding in the following molecules.
Calcium oxide
Copy and complete the following table relating to the atomic structure of some elements:
| Element | Atomic Number | Mass Number | Number of protons | Number of Neutrons | Number of Electrons |
| Beryllium | 4 | 9 | |||
| Fluorine | 9 | 10 | |||
| Sodium | 12 | 11 | |||
| Aluminium | 27 | 13 | |||
| Phosphorus | 31 | 15 |
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^23_11Na}\]
Number of valence electrons in carbon is ______.
