JEE Main 2003 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main 2003

A reduction in atomic size with increase in atomic number is a characteristic of element of

(1)d-block
(2)f-blockCorrect
(3)radioactive series
(4)high atomic masses

Answer: (2)

Solution

The steady decrease in atomic and ionic size with increasing atomic number is the lanthanide (and actinide) contraction, characteristic of the f-block elements, caused by the poor shielding of

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Question ID VK-038197