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प्रश्न
Explain the following:
The reducing power of element increases down in the group while decreases in a period.
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उत्तर
The reducing property depends on the ionisation potential and electron affinity of the elements. In a period, from left to right in a horizontal row of the periodic table, the atomic size decreases and the nuclear charge increases, so the electron affinity and ionisation energy both increase. Hence, the tendency to lose electrons decreases across the period from left to right and thus the reducing property also decreases across the period from left to right.
The electron affinity and ionisation potential decreases along the group from top to bottom. Hence, the tendency to lose electrons increases, and thus, the reducing property also increases along the group from top to bottom.
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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]
Electron affinity values generally _______ across the periods left to right and ______ down the group top to bottom.
Give reason:
Electron affinity of halogens is comparatively high ?
Give reason:
Electronegativity of chorine is higher than Sulphur?
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.
Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Electron affinity increases going down a group.
The following questions refer to the Periodic Table.
Which of the elements has the greatest electron affinity among the halogens?
Neon shows zero electron affinity due to ______.
State electron affinity unit.
