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प्रश्न
State whether the following statement is true or false
Al2O3 is an amphoteric oxide.
विकल्प
True
False
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उत्तर
True
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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.
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.
Give reason:
Electron affinity of halogens is comparatively high ?
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
Which has higher E.A. fluorine or Neon?
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
The nature of oxide Al2O3 is ____
Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)
The following questions refer to the Periodic Table.
Which of the elements has the greatest electron affinity among the halogens?
