ChemistryHardHigh School (11–12)The d- and f-Block Elements › Lanthanoids and Actinoids (f-Block)NEETA-LevelIB
Created by StemPy LabHow many of the following statements are correct? (1) The 4f electrons are held deep inside the atom. (2) The contraction is greater at each step in the actinoids than in the lanthanoids. (3) The basic strength of the hydroxides falls from La to Lu. (4) Every lanthanoid shows the state.
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← Match the catalyst with the process. List I: (a) V₂O₅ (b) iron with a promoter (c) finely divided nickel (d) TiCl₄ with Al(C₂H₅)₃. List II: (i) hydrogenation of oils (ii) polymerisation of ethene (iii) synthesis of ammonia (iv) contact process.Successive oxidation states of a transition element differ by one unit, and those of a p-block element by two. This is mainly because →
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