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NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions

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Question : 30
Total: 49
Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.
Solution:  
Lawrencium (Lr) is the last element of actinoids. Its outer electronicconfiguration is 5f146d17s2and its possible oxidation state is +3.
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