Advertisements
Advertisements
प्रश्न
What do you understand by redox reactions?
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.
APPEARS IN
संबंधित प्रश्न
Define a chemical bond.
Complete the following:
| Sodium | Phosphorus | Carbon | |
| Formula of chloride | |||
| Nature of bonding | |||
| Physical state of chloride |
State the type of bonding in the following molecule.
Calcium oxide
Why do `""_17^35"CI"` and `""_17^37"CI"` have the same chemical properties? In what respect do these atoms differ?
Name the following:
An element having valency 'zero'
Explain
Duplet rule for the formation of hydrogen
State the type of bond between Y and Z and give its molecular formula.
Give the orbital diagram of the following:
Methane
State the type of bonding in the following molecules.
Water,
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
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:
\[\ce{^39_19K}\]
Draw the electron distribution diagram for the formation of Carbon di oxide (CO2 ) molecule.
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
______ theory explains the formation of molecules.
______ is the only noble gas that does not have eight electrons in its valence shell.
What is a chemical bond?
How many atoms of each kind are present in the following molecule:
Chlorine
How many electrons are required or released by each atom in chlorine to attain the nearest noble gas configuration?
Elements A, B and C have atomic number 17, 19 and 10 respectively.
Write down the formula of the compound formed by two of the above elements.
