Chromium and Oxygen Chemistry Concepts

The video tutorial explains how to write the formula for Chromium IV Oxide. It begins by identifying the element symbol for Chromium and its charge, followed by the charge of Oxygen. The tutorial then demonstrates how to balance these charges to achieve a neutral compound, resulting in the formula CrO2. The video concludes with a brief remark on the drawing of Oxygen.

What is the element symbol for chromium?

• Ch

• Co

• Cm

• Cr

What does the Roman numeral IV indicate in Chromium IV Oxide?

• The number of oxygen atoms

• The group number of chromium

• The charge of chromium

• The atomic number of chromium

Which group is oxygen found in on the periodic table?

• Group 14

• Group 16

• Group 12

• Group 18

What is the ionic charge of oxygen?

• 2+

• 1-

• 2-

• 1+

How many oxygen atoms are needed to balance the charge of one chromium atom in Chromium IV Oxide?

• Four

• One

• Two

• Three

What is the correct formula for Chromium IV Oxide?

• CrO

• CrO3

• CrO2

• Cr2O3