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The element with atomic number 13 is ....

The element with atomic number 13 is ___________ .

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aluminium
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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -ADDITIONAL QUESTIONS & ANSWERS ( FILL IN THE BLANKS )
  1. is the periodic property which is used to predict the nature of bond...

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  2. The process of reducing the roasted metallic oxide to metal is called

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  3. The element with atomic number 13 is .

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  4. Chemical formula of bauxite is

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  5. is silvery white metal.

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  6. When aluminium is used as a reducing agent , the process is called pr...

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  7. The black oxide of copper is

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  8. Iron containing 2-4.5% of carbon is called

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  9. metal is alloyed with gold and silver for making coins and jewels.

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  10. is used for dental filling .

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  11. Brass is an alloy of and .

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  12. is the metal widely used for anodizing .

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  13. Transition metals fall under groups to .

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  14. The distance between the centre of its nucleus and the outermost sh...

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  15. Atomic radius, ionic radius, electron affinity are called properties ...

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  16. The atomic radius of non-metallic elements is known as .

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  17. Along the period , from left to righ , the atomic radius of the elemen...

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  18. Along the groups , from the top to bottom, the atomic radius .

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  19. As the shell number increases, the distance between the valence shell...

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  20. More and more positive charges impose a over the electrons.

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