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प्रश्न
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:
विकल्प
Goes up and then down
Decreases and then increases
Increases
Decreases
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उत्तर
Increases
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संबंधित प्रश्न
Element X is a metal with a valency 2, Y is 3 non- metal with a valency 3.
1) Write an equation to show how Y from an ion.
2) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
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?
Fill in the blank
Energy released when electron is added to a neutral gaseous atom is called ______.
Fill in the blank
The nature of oxide Al2O3 is ____
Choose the correct answer:
Among the period 2 elements the one which has high electron affinity is
On descending a group, ______ in ionisation potential as well as electron affinity ______ oxidising capacity.
Among period 2 elements A, B, C and D, the one which has highest electron affinity is ______.
