While surveying a newly discovered volcanic moon, an astrochemist tests four unidentified metallic samples retrieved from crystalline vents to determine which one belongs to the transition metal block of the periodic table. The researcher observes that one sample forms deeply colored purple and green aqueous solutions, exhibits multiple stable oxidation states such as +2 and +3, and effectively accelerates the decomposition of hydrogen peroxide. Based on periodic trends and characteristic group behaviors, which set of properties correctly identifies this sample as a transition metal?

A) Having a fixed +1 oxidation state and reacting violently with cold water to liberate hydrogen gas

B) Possessing extremely low melting points and forming exclusively white or colorless ionic compounds

C) Occupying Group 17 of the periodic table and readily gaining an electron to form stable anions

D) Displaying variable oxidation numbers, catalytic efficiency, and the formation of colored coordination complexes

Transition metals Original Scenario-Based Download PDF

Chemistry · The Periodic Table · Chemistry · Organization of the Periodic Table

1 Chemistry practice questions on Transition metals. Questions built around original scenarios.

The Periodic Table · Chemistry

Choose a topic and keep learning.