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प्रश्न
Define the term ‘electron affinity’.
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उत्तर
Electron affinity is the energy released when an isolated gaseous atom acquires an electron to form an anion.
\[\ce{X (g) + e- -> \underset{(anion)}{X-(g)}+ E.A.}\]
X is any element taken in its gaseous state.
संबंधित प्रश्न
Draw an electron dot diagram to show the formation of each of the following compounds:
Magnesium Chloride
[H = 1, C = 6, Mg = 12, Cl = 17]
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.
Give reason:
Electronegativity of chorine is higher than Sulphur?
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing electron affinity
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.
Fill in the blank
Energy released when electron is added to a neutral gaseous atom is called ______.
Fill in the blank
Noble gases have ______ electron affinity.
State whether the following statement is true or false
The elements with higher electron affinity have higher ionization potential.
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.
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element A would probably have ______ electron affinity than B.
