Long Answer TypeWhat is long form of the periodic table? Discuss in brief its salient structural features.
Short Answer TypeLong Answer TypeShort Answer TypeWhat are the defects of long form of the periodic table?
1. Position of hydrogen. Hydrogen shows similarities with both metals(alkali metals) and non-metals (halogens) but it is placed with alkali metals.
2. Position of helium. It is kept along with p-block elements.
3. Position of lanthanoids and actinoids. They are kept outside the main body of the periodic table.
Long Answer TypeShort Answer TypeLong Answer TypeShort Answer TypeWhat are the advantages of classifying the elements into s, p, d and f-block elements?
Which element do you think would have been named by:
(i) Lawrence Berkeley Laboratory
(ii) Seaborg's group?
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