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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 that of element C.
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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.
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Energy released when electron is added to a neutral gaseous atom is called ______.
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The nature of oxide Al2O3 is ____
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Noble gases have ______ electron affinity.
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State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
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State whether the following statement is true or false
The elements with higher electron affinity have higher ionization potential.
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Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)
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What is electron affinity?
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Explain
Halogens have high electron affinity.
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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.
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The following questions refer to the Periodic Table.
Which of the elements has the greatest electron affinity among the halogens?
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Choose the correct answer:
Among the period 2 elements the one which has high electron affinity is
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Down the group, electron affinity ______.
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Among the Period 2 elements, the element which has high electron affinity is
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Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
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The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The electron affinity of elements in groups 1 to 7:
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In a period, increase in electron affinity increases ______.
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On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
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