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प्रश्न
What is electron affinity?
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उत्तर
Electron affinity is the energy released when an electron is added to an isolated gaseous atom to form the negative ion (anion).
Unit: Its units are electron volt (eV).
Its SI units are Kilojoules per mole (KJmol-1).
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संबंधित प्रश्न
Draw an electron dot diagram to show the formation of the following compound:
Methane
[H = 1, C = 6]
Choose the correct answer from the options given below:
If an element A belongs to Period 3 and Group II, then it will have
A. 3 shells and 2 valence electrons
B. 2 shells and 3 valence electrons
C. 3 shells and 3 valence electrons
D. 2 shells and 2 valence electrons
Give one word or phrase for the following:
The amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
Give reason:
Electronegativity of chorine is higher than Sulphur?
Which has higher E.A. fluorine or Neon?
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 B is Zero.
State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
Among the Period 2 elements, the element which has high electron affinity is
Neon shows zero electron affinity due to ______.
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.
