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Write the formulae of chlorides of Eka-S...

Write the formulae of chlorides of Eka-Silicon and Eka-aluminium, the elements predicted by Mendeleev.

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Eka-silicon is germanium (Ge). It lies in group 4 of the Mendeleev's periodic table and thus, has a valancy of 4
`:.` The formula of its chloride is `GeCl_(4)`
Eka-aluminium is gallium (Ga). It lies in group 3 of the Mendeleev's periodic table adn thus, has a valency of 3
`:.` The formula of its chloride is `GaCl_(3)`.
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NCERT EXEMPLAR-PERIODIC CLASSIFICATION OF ELEMENTS-Periodic Classification Of Elements
  1. In Mendeleev's periodic table, the elements were arranged in the incre...

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  2. Hydrogen occupies a unique position in modern periodic table. Justify ...

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  3. Write the formulae of chlorides of Eka-Silicon and Eka-aluminium, the ...

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  4. Three elements A, B and C have 3,4 and 2 electrons respectively in the...

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  5. If an element X is placed in group 14, what will be the formula and th...

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  6. Compare the radii of two species X and Y. Give reasons for your answer...

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  7. Arrangement the following elements in increasing order of their atomic...

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  8. Identify and name the metal out of the following elements whose electr...

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  9. Write the formula of the product formed when the element A (atomic num...

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  10. Arrange the following elements in the increasing order of their metall...

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  11. Identify, the elements with the following property and arrange them in...

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  12. Properties of the elements are given below. Where would you locate the...

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  13. An element is placed in 2^("nd") group and 3^("rd") period of the peri...

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  14. An element X (atomic number 17) reacts with an element Y (atomic numbe...

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  15. Atomic number of few elements are given below 10, 20, 7, 14 (a) Iden...

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  16. Complete the following crossword puzzle (Figure) Across (1) An ele...

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  17. (a) In this ladder (Figure) symbols of elements are jumbled up. Rearra...

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  18. Mendeleev predicted the existence of certain elements not known at tha...

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  19. (a) Electropositive nature of the element(s) increases down the group ...

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  20. An element X which is a yellow solid at room temperature shows catenat...

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