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Which alkali metal and alkaline earth me...

Which alkali metal and alkaline earth metal are radioactive? Give their atomic numbers also.

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Francium, `Fr,Z=87`
Radium, `Ra,Z=88`
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CENGAGE CHEMISTRY-APPENDIX - INORGANIC VOLUME 1-Exercise Short
  1. Compare alkaline earth metals with alkali metals w.r.t (a) atomic and ...

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  2. Arrange sulphates of group 2 in decreasing order of solubility of wate...

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  3. Arrange carbonates fo group 2 in increasing order of thermal stability...

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  4. Arrange hydroxides of group 2 elements in order of increasing basicity...

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  5. Arrange Be,Mg,Ca,Sr and Ba in increasing order of reactivity.

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  6. What kind of metals can form superoxides?

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  7. Name the alkali metal which can combine directly with As,P,S and halog...

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  8. Which among Na(2)O(2),Li(2)O,K(3)N and Li(3)N is not known?

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  9. Which among Na,K,Pb and Li has the lowest melting point?

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  10. Name an element which is invariably bivalent and whose oxide is solubl...

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  11. Mention the main constituents of Portland cement. What is the role of ...

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  12. Arrange the following in order of the increasing covalent character: ...

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  13. Which alkali metal and alkaline earth metal are radioactive? Give thei...

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  14. Which alkali metal forms covalent compound?

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  15. Give one important ore of each of sodium and megnesium.

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  16. Give chemical formula of dolomite and carnallite.

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  17. Why the element of second period shows a number of difference in prope...

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  18. Name one reagent or one operation to distinguish between: a. Be(OH)(...

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  19. Why sodium cannot be prepared by electrolysis of its aqueous solution?

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  20. What is dead burnt plaster?

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