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Question
Which of the following can be found in the second period?
Which of the following can be found in the second period?
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Solution
The correct option is D Lithium
Lithium can be found in the second period. The outer electronic configuration of Li is 2s1. Thus, the last electron enters 2s orbital.
Lithium can be found in the second period. The outer electronic configuration of Li is 2s1. Thus, the last electron enters 2s orbital.
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