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In Mendeleev's periodic table gap was no...

In Mendeleev's periodic table gap was not left for one of the following elements. This element is :

A

gallium

B

beryllium

C

germanium

D

scandium

Text Solution

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The correct Answer is:
B
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. (a) How do the properties of eka-aluminium element predicted by Mendel...

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  2. (a) Why do we classify elements? (b) What were the two criteria used...

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  3. In Mendeleev's periodic table gap was not left for one of the followin...

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  4. The Newlands' law of octaves for the classification of elements was fo...

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  5. According to Mendeleev' periodic law, the elements were arranged in th...

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  6. Three elements B, Si and Ge are :

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  7. In Mendeleev's periodic table, gaps were left for the elements to be d...

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  8. The three imaginary elements X,Y and Z represent a Döbereiner's triads...

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  9. The atomic numbers of four elements P,Q,R and S are 6,8,14 and 16 resp...

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  10. Which of the following statement is correct in regard to the classific...

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  11. Which of the following statements about the modern periodic table is c...

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  12. An element X forms an oxide X(2)O(3). In which group of Mendeleev's pe...

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  13. The modern periodic table was prepared by

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  14. The atomic particle whose number in the atoms of an element always rem...

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  15. The atomic masses of three elements X,Y and Z having similar chemical ...

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  16. In the following set of elements one element does not belong to the se...

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  17. In the following set of elements, one element does not belong to the s...

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  18. Can the following groups of elements be classified as Dobereiner's tri...

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  19. Consider the following elements: Na, Ca, Al, K,Mg, Li (a) Which of...

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  20. Which element has (a) two shells, both of which are completely filled...

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