Editor’s Note: This story is part of CNN’s coverage of Black History Month and its ... a single square in the seventh row of the periodic table of elements that scientists struggled to fill.

This Black woman scientist played a crucial role ... Clarice Phelps contributed to the discovery that filled in square 117 on the periodic table, creating tennesine (Ts), the second-heaviest ...

Clarice Phelps is a trailblazing scientist who gave new meaning to the phrase “having a seat at the table” when she became the first Black woman to help discover a new element on the periodic ...