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Why group 17 elements are highly reactiv...

Why group 17 elements are highly reactive ?

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Group 17 elements are highly reactive as they are very close to a stable configuration.
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What are chalcogens ? Why are group 16 elements called chalcogens ?

The main group elements i.e. representative elements complete their electron configuration using s and p electrons in the periodic table. These elements range from the most metallic to the most non-metallic with intermediate properties, the semi-metals, in between .The elements which occur at the two extremes of the periodic table are highly reactive and therefore, these highly reactive elements do not occur in free state : they usually occur in the combined forms. Beryllium and aluminium exhibit many properties which are similar, but, the two elements differ in :

ICSE-THE PERIODIC TABLE -TOPIC 2 Studying Individual Groups (3 Marks Questions)
  1. What is nature of compounds formed when group 17 elements react with m...

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  2. State the nature of compounds formed when group 17 elements combine wi...

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  3. Why group 17 elements are highly reactive ?

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  4. Comment on the reactivity of group 17 elements.

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  5. Comment on the colour of group 17 elements.

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  6. Comment on the physical state of group 17 elements.

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  7. The table given below shows the position of element U, V, X, Y and Z ...

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  8. The table given below shows the position of element U, V, X, Y and Z ...

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  9. Name the method used for extraction of alkali metals

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  10. Name first three alkali metals

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  11. Lithium compounds impart ........colour to the flame.

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  12. Find the name of elements based on the electronic configuration : 2,8,...

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  13. Find the name of elements based on the electronic configuration : 2,8,...

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  14. Find the name of elements based on the electronic configuration : 2,8,...

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  15. Write one main characteristic of p-block elements or representative e...

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  16. Write one main characteristic of d-block elements or transition eleme...

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  17. Write one main characteristic of f-block elements or inner transition...

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  18. Which element has twice as many electrons in its second shell as in th...

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  19. Which element has 3 shells in total with eight electrons in its valen...

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  20. Name an element that has two shells each one of which is completely fi...

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