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The position of elements A,B,C,D and E i...

The position of elements A,B,C,D and E in the periodic table are shown below :

State which is the most reactive (i) metal (ii) non metal .

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Most reactive
(i) Metals : Alkali metals (Group I) are most reactive metals and the reactivity increases down the group. .A. is most reactive metal.
(ii) Non-metals : Halogens (Group 17) are most reactive non-metals and the reactivity decreases down the group. .C. is most reactive non-metal.
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ICSE-THE PERIODIC TABLE -TOPIC 1 Modern Periodic Table and its Periodicity (5 Marks Questions )
  1. Helium is an unreactive gas and neon has very poor reactivity. What do...

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  2. The position of elements A,B,C,D and E in the periodic table are shown...

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  3. The position of elements A,B,C,D and E in the periodic table are shown...

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  4. The position of elements A,B,C,D and E in the periodic table are shown...

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  5. The position of elements A,B,C,D and E in the periodic table are shown...

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  6. Write electronic configuration of element underset(17)overset(35)""T....

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  7. Write electronic configuration of element underset(17)overset(35)""T....

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  8. Write electronic configuration of element underset(17)overset(35)""T....

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  9. Write electronic configuration of element underset(17)overset(35)""T....

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  10. Mention the part of group where the elements show: Highest metallic c...

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  11. Mention the part of group where the elements show: Big atomic size

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  12. How valency of elements changes : Along the period from left to right

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  13. How valency of elements changes : Down the group from top the bottom

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  14. Name the metalloid present in second period

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  15. For elements ""19^39X Write electronic configuration

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  16. For elements ""19^39X What is the group number

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  17. For elements ""19^39X What is the period number

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  18. For elements ""19^39X Number of valence electrons

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  19. For elements ""19^39X Valency of X

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  20. An elements P has atomic no. 13. Write its electronic configuration

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