Question

Two new elements (discovered in Aug 2003) with atomic number $113and115$ are to be placed in:

• A. $s$-block elements
• B. $p$-block elements
• C. $d$-block elements
• D. $f$-block elements

Answer 1

The correct option is B $p$-block elements

Two superheavy elements, elements 113 and 115, were recently synthesised 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.
$113:\left[Rn\right]4f^{14}5d^{10}7s^{2}7p^1$
$115:\left[Rn\right]4f^{14}5d^{10}7s^{2}7p^3$
Thus, p-block element.