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Question
Name or state following with reference to the element of the first three periods of the periodic table.
The periods which contain the inner transition elements.
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Solution
Inner transition elements in the 6th period and 7th period.
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- What do (A), (B), (C), and (D) represent? [1]
- Elements are arranged in increasing order of their ______. [1]
- Write the electronic configuration of the first four elements in Group I. [1]
- What change in atomic radius is observed in moving from left to right in a Period? [1]
- Give a reason for (d). [1]
