Nickel Hydroxide Compound Concepts

The video tutorial explains how to name the compound Ni(OH)2. It begins by identifying the hydroxide ion and recognizing the compound as ionic due to the presence of metal and nonmetals. The tutorial then outlines the steps to name the compound, starting with the metal, nickel, followed by the polyatomic ion, hydroxide. Since nickel is a transition metal, its charge must be indicated using Roman numerals. The tutorial demonstrates how to determine the charge of nickel based on the hydroxide ions it is bonded to, resulting in the name nickel(II) hydroxide. The video concludes by explaining how to write the formula from the name.

What is the name of the ion OH when it is bonded to a metal?

• Oxygen ion

• Hydrogen ion

• Oxide ion

• Hydroxide ion

What type of compound is Ni(OH)2?

• Covalent compound

• Ionic compound

• Molecular compound

• Metallic compound

What is the name of the metal in Ni(OH)2?

• Nickel

• Nitrogen

• Neon

• Nihonium

Why do we use Roman numerals in the name of Ni(OH)2?

• To represent the atomic number of nickel

• To show the charge of the nickel

• To indicate the number of hydroxide ions

• To denote the number of atoms in the compound

What is the charge of each hydroxide ion in Ni(OH)2?

• 2-

• 1+

• 2+

• 1-

What is the correct name for Ni(OH)2?

• Nickel oxide

• Nickel(III) hydroxide

• Nickel(II) hydroxide

• Nickel hydroxide

How many hydroxide ions are needed to balance the charge of nickel in Ni(OH)2?

• One

• Three

• Four

• Two

What is the net charge of the compound Ni(OH)2?

• 2+

• 1+

• 0

• 1-