An element that has the outer electron configuration 6s²5d⁷ belongs to which period and group? A) period 7; group 9 B) period 6; group 7 C) period 6; group 2 D) period 6; group 9 E) period 7; group 7

Question

Quizplus · Accepted Answer

The element has 6 electron shells, so it belongs to period 6. It has an outer electron configuration of s1p1d1, indicating that it belongs to group 9 (or group 7 in the new IUPAC numbering system). Therefore, the best choice is D.

An Element That Has the Outer Electron Configuration 6s25d7 Belongs

An Element That Has the Outer Electron Configuration 6s²5d⁷ Belongs