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प्रश्न
Give one word or a phrase:
The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged ion.
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उत्तर
Electron affinity or electron gain enthalpy
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संबंधित प्रश्न
Draw an electron dot diagram to show the formation of the following compound:
Methane
[H = 1, C = 6]
Arrange the elements of second period in increasing order of their electron affinity. Name the elements which do not follow the trend in this period.
Explain the following:
The reducing power of element increases down in the group while decreases in a period.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing electron affinity
An element in period 3 whose electron affinity is zero.
A, B, C are three elements in which B is an inert gas other than helium. With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z − 1 | - | - |
| B | Z | - | - |
| C | Z + 1 | - | - |
Also, explain the following:
- Electron affinity of element A is more than that of element C.
- lonization energy of element C is less than that of element A.
- Electron affinity of B is zero.
State whether the following statement is true or false
The elements with higher electron affinity have higher ionization potential.
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
The electron affinity of an element X is greater than that of element Y.
How is the oxidising power of X likely to compare with that of Y?
The electron affinity of an element X is greater than that of element Y.
State whether X is likely to be placed to the left or to the right of Y in the periodic table.
