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The position of three elements A, B and ...

The position of three elements A, B and C in the periodic table are as shown below:
State whether a is a metal or non-metal

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MBD-PERIODIC CLASSIFICATION OF ELKHOENTS-EXAMPLE
  1. An atom has electronic configuration 2,8,7. What is the atomic number ...

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  2. An atom has electronic configuration 2,8,7. To which of the following...

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  3. The position of three elements A, B and C in the periodic table are as...

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  4. The position of three elements A, B and C in the periodic table are a...

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  5. The position of three elements A, B and C in the periodic table are a...

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  6. The position of three elements A, B and C in the periodic table are as...

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  7. Nitrogen(atomic number 7 ) and phosphorus (atomic number 15) belong to...

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  8. How does the electronic configuration of an atom relate to its positio...

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  9. In the modern periodic table, calcium (atomic number20) is surrounded ...

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  10. Compare and contrast the arrangement of elements in mendeleev's period...

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  11. What do you understand by Doberiner's traids? Give some examples to su...

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  12. What was Doberiner's basis of clasifying elements?

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  13. Give a brief discussion of the Mendeleev's classification of the eleme...

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  14. Why do we classify elements?

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  15. What were the two criteria used by mendeleev in creating his periodic ...

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  16. Why did mendeleev leave some gaps in his periodic table?

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  17. In mendeleev's perodic table, why was there no mention of noble gases ...

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  18. Would you place the two isotopes of chlorine CI-35 and CI-37 because o...

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  19. How did mendeleev's periodic table help in the discovery of new elemen...

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  20. Discuss some major merits of the Mendeleev's periodic table

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