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Question

Element with atomic number 113 has been reported in August 2003. Its electronic configuration is similar to that of:

A
Si
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B
Ga
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C
Bi
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D
At
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Solution

The correct option is C Ga
Two superheavy elements, elements 113 and 115, were recently synthesized through a collaborative effort between scientists from the Physical and Life Sciences Directorate at the Lawrence Livermore National Laboratory and researchers from the Joint Institute for Nuclear Research at the Flerov Laboratory for Nuclear Reactions in Dubna, Russia.
113:[Rn]4f145d107s27p1. So, element (113) lies below TI (group 13, i.e. IIIA). Thus, it resembles Ga.

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