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For elements ""19^39X Number of valen...

For elements `""_19^39X`
Number of valence electrons

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ICSE-THE PERIODIC TABLE -TOPIC 1 Modern Periodic Table and its Periodicity (5 Marks Questions )
  1. For elements ""19^39X Write electronic configuration

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

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

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

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

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

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  7. An elements P has atomic no. 13. State the group to which it belong...

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  8. An elements P has atomic no. 13. Elements P is metal or non-metal ?

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  9. An elements P has atomic no. 13. Write the formula of its oxide

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  10. Name the scientist who proposed modern periodic law

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  11. Name first element of period 7

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  12. As we move down the group, the atomic size increases or decreases ?

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  13. What is the common feature of the electronic configurations of the ele...

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  14. Properties of eka silicon resembles with which element ?

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  15. Beryllium exhibits diagonal relationship with .................. (magn...

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  16. Elements W, X, Y, Z in the periodic table are shown below: State...

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  17. Elements W, X, Y, Z in the periodic table are shown below: State...

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  18. Elements W, X, Y, Z in the periodic table are shown below: State...

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  19. Elements W, X, Y, Z in the periodic table are shown below: Ident...

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  20. Elements W, X, Y, Z in the periodic table are shown below: If Z ...

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