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Classification of Elements and Periodicity in Properties
Why do the noble gas elements have exceptionally high atomic radii?
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In a period, generally the size of the atom decreases with rise in atomic number, but at the end of each period, atomic size of the noble gas increases abruptly. Why is it so?
In the case of noble gases, we measure Vander Waal’s radii instead of covalent radii since these elements do not form covalent bonds. As by definition, Vander Waal’s radii are larger than covalent radii, the atomic size of an inert gas in a period is much higher than that of preceding halogen.
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What are magic numbers?
Which property is the basis of long form of periodic table?
How many elements are placed in each period of the p-block?
What is the number of groups in: (i) p-block (ii) d-block?
How many elements are present in:
(i) second period
(ii) fourth period
(iii) sixth period?
What is the name given to the s-block elements?
To which block the element with outer electronic configuration 4s23d10 belongs?
Why are there 10 elements in each series of d-block?
In terms of electronic configuration,
what is common in a given period and group?
Give the general electronic configuration of
(i) Transition elements (ii) Inner transition elements.
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