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The atomic numbers of three elements A, ...

The atomic numbers of three elements A, B and C are 11, 13 and 19 respectively. Explain which two of the elements will belong to the same group of the periodic table.

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BHARATI BHAWAN (ENGLISH)-PERIODIC CLASSIFICATION OF ELEMENTS -Short - Answer Questions
  1. State Dobereiner's law of triads. Give an example.

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  2. State and explain Newlands' law of octaves .

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  3. In which part of the periodic table are the metals, nonmetals and meta...

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  4. How are the positions of isotopes of elements settled in the long form...

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  5. Explain why atomic radius decreases from Li to F.

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  6. How does the tendency of elements to lose electrons change in a group ...

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  7. Name the period of the modern periodic table to which the two elements...

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  8. The atomic numbers of three elements A, B and C are 11, 13 and 19 resp...

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  9. Discuss the relationship the exists amongst some of the elements of 2n...

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  10. How are the group number and period number of an element in the period...

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  11. What are the limitations of the law of octaves ?

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  12. What common property do all elements of the boron group have ?

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  13. Why have to noble gas been placed in a separate group ?

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  14. Why did Mendeleev leave some vacant places in his periodic table ?

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  15. Elements A,B,C ,D E and F and their respective atomic numbers (withoin...

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  16. How does the atomic size of elements vary in a period of the perioedic...

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  17. Which of the two elements N (at. No. 7) and P (at. No . 15) will be mo...

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