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Name the last element of third period?...

Name the last element of third period?

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MBD-PERIODIC CLASSIFICATION OF ELKHOENTS-EXAMPLE
  1. Out of Na and K which is more reacitve?

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  2. Name the group number of halogne family?

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  3. Name the last element of third period?

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  4. What is dobereiner's triad?

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  5. A,B and C constitute the doberiner's traid. Atomic mass of a and c are...

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  6. Name the elements discovered after mendeleev's periodic table?

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  7. what do you mean by isotopes. give two example.

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  8. How does atomic radii as we move from left along a period in the perio...

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  9. An element has the electronic configuration 2,8,3 what is its group nu...

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  10. Give the basis of dobereiner's classification.

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  11. Give the characteristics of doberiner's traids?

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  12. What is the drawback of doberenier's traids?

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  13. There are three elements X,Y,Z atomic masses of X and Z are 35.5 and 1...

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  14. Write newland's law of octaves for classification of elements.

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  15. How many element were calssified by newland.

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  16. Indicate the group number and period number of phosphorous in the mode...

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  17. An element has the electronic configuration 2,8,8,2 indicate its group...

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  18. An element M is in the group 13 and period 3 modern periodic table wri...

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  19. Give the groups and periods in the moders periodic table?

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  20. Give the groups and periods in the moders periodic table?

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