Hol Quiz

What is the chemical symbol for the element holmium?

• Hl

• Hm

• Ho

• He

In which group of the periodic table is holmium located?

• Lanthanide

• Actinide

• Noble gases

• Alkali metals

What is the atomic number of holmium?

• 72

• 67

• 45

• 53

What is the melting point of holmium in Celsius?

• 2000°C

• 1000°C

• 500°C

• 1474°C

What is the most common oxidation state of holmium?

• +3

• -3

• +4

• +2

Who discovered holmium and in which year?

• Marie Curie in 1902

• Albert Einstein in 1920

• Isaac Newton in 1665

• Marc Delafontaine and Jacques-Louis Soret in 1878

What are some common uses of holmium in everyday life?

• Mobile phone screens

• Automobile tires

• Cooking utensils

• Specialized goggles for glassblowers and welders

What is the natural abundance of holmium in the Earth's crust?

• 0.5 parts per million

• 10 parts per million

• 1.3 parts per million

• 100 parts per million

What is the color of holmium when it is in its pure form?

• Bright red

• Dark blue

• Yellowish green

• Silvery white

What are some interesting facts about holmium that you have learned?

• Holmium is highly reactive with water

• Holmium is a gas element

• Holmium is commonly found in household items

• Holmium is a rare earth element with the symbol Ho and atomic number 67. It is a silvery-white metal that is relatively stable in air. Holmium is used in nuclear reactors and as a component in some electronic devices.