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प्रश्न
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.
उत्तर
Lithium < Boron < Carbon < Oxygen < Fluorine
Neon, Nitrogen and Beryllium do not show negative values and hence do not follow the trend in this period.
संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
He, Ar, Ne (Increasing order of the number of electron shells)
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.
Define the term ‘electron affinity’.
State the factors on which electron affinity depends ?
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
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.
The electron affinity of an element X is greater than that of element Y.
How is the electronegativity of X likely to compare with that of Y?
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
