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What is the total number of elements inc...

What is the total number of elements incorporated till not in the periodic table? Write down the name and symbol of the last element.

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Total number ofelements incorporated in the periodic table is 118. name of the last element is Ununoctium and its symbol is Uuo (Z=118).
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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-QUESTION-ANSWER ZONE FOR BOARD EXAMINATION
  1. Write the stomic number of the element placed just below cobalt (Z=27)...

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  2. Indicate the position of the element having electronic configuration 1...

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  3. What is the total number of elements incorporated till not in the peri...

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  4. Which group of the long form of the periodic table contains solid, liq...

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  5. Which element is the most electronegative?

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  6. Name one property which is not periodic.

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  7. Arrange according to the instructions given the in the bracker: (1) O,...

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  8. Name the elements having highest and lowest ionisation enthalpy.

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  9. What do mean by the statement-covalent radius of H-atom is 0l.37 Å?

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  10. indicate the similarity observed in the electron-gain enthalpy values ...

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  11. Why is the size F^(-) smaller tha that of O^(2-) ion?

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  12. Compare the radii of K^(+) and Cl^(-) ions (each contain the same numb...

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  13. What do you underrstand by negative value of electro-gain enthalpy of ...

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  14. Electronic configuration of the atom of an element is 1s^(2)2s^(2)2p^(...

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  15. Atomic numbers of elements A,B and C are 10,13, & 17 respectively. (1)...

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  16. A, B and C are three elements with atomic numbers 17,18 and 20 respect...

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  17. Outer electronic configuration of 4 elements are as given below follow...

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  18. Write electronic configuration of the element with atomic number 35. w...

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  19. Justify the mentioning two reasons, the inclusion of Ca and Mg in the ...

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  20. Cu, Ag & Au are regarded as transition elements. Why?

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