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Find the sum of total number of 5f-elect...

Find the sum of total number of 5f-electrons in Th and Ac.

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The and Ac does not have `5fe^(-)`
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GRB PUBLICATION-PERIODIC TABLE-Subjective Type
  1. 0.5 moles of gaseous non-metallic X^(-) anions (having positive elect...

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  2. 1.0 g of Mg atom ("atomic mass" = 24.0 "amu") in the vapour phase abso...

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  3. Find the sum of total number of 5f-electrons in Th and Ac.

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  4. Find the total number of species having two unpaired electrons from th...

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  5. If internuclear distance between A atoms in A(2) is 10Å and between B ...

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  6. Find the number of p-block elements from the following atomic numbers ...

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  7. Find the total number of 6^(th) period elements from the given atomic ...

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  8. Find the total number of paramagnetic species among the following? S...

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  9. What is the group number of Ba in periodic table?

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  10. Select the number of elements which are called transition metals. B,...

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  11. Among the following species, how many have their ionic size greater th...

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  12. Among the following find out the total number of d-block elements. L...

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  13. Number of oxides which is/are more basic as compared to Na(2)O. Li(2...

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  14. Bond length of A-A bond is 124 pm and bond length of B-B bond is 174 p...

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  15. Find the number of chemical species in which outer shell 'd' orbital i...

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  16. Find the number of transition elements in the following: Zn, Cd,Hg, ...

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  17. According to Hannay-Smith formula, if E.N difference between A and B i...

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  18. The element with the lowest atomic number that has a ground-state elec...

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  19. Find the total number of correct orders among the following. (a) Ord...

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  20. Period number of Sc = x Modern periodic table group number of TI = x...

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