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Lanthanoids and actinoides are given in ...

Lanthanoids and actinoides are given in separate position in the periodic table.
a)Which of them are known as rare earths?
b) Which of them are man made elements?
c) To which period do lanthanoids belong?
d) What is the common name for lanthanoids and actinoides?

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A) Lanthanoides
b) Actinoides
c) 6
d) Inner transistion elements
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V PUBLICATION-PERIODIC TABLE-QUESTION BANK
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  2. In an atom of the element X there are three shells and 2 electrons are...

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  3. Three atoms are given: underset(11)\Na, underset(15)\P, underset(17)...

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  4. Electronic configuration of elements A, B, C, and D are given. (Symbol...

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  5. Magnesium and chlorine are two elements in the third period in the per...

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  6. The position of the element A, B and C in the periodic table are given...

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  7. Complete the table.

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  8. a) How do second group elements in the periodic table differ from 17th...

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  9. A portion of the periodic table is given below (Hint: The atomic num...

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  10. A part of the periodic table is given: a) Write down the electronic ...

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  11. What are the basis of classification of elements in the modern periodi...

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  12. To which period does actinoides belong?

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  13. Which elements among the follwing is a metalloid? ( S, Si, Ca, P)

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  14. Element 'A' belongs to third period of the periodic table.This is a no...

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  15. Identify the wrong and correct statements accordingly: i) As the siz...

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  16. Electronic configuration of an atom of an element is 2,8,8 , 2. a) ...

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  17. The element A belongs to second period, 17th group and B belongs to se...

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  18. Lanthanoids and actinoides are given in separate position in the perio...

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  19. A portion belonging to the same period of modern periodic table is giv...

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  20. Sodium and sulphur are two elements in the third period in the periodi...

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