Nickel and Sulfur Compounds

The video tutorial explains how to name the compound NIS, which consists of nickel and sulfur. It begins by identifying nickel as a transition metal and sulfur as a non-metal, forming an ionic compound. The tutorial details the naming process, replacing 'ur' in sulfur with 'ide' to form 'sulfide'. It emphasizes the importance of charge balancing, noting that sulfur forms 2- ions, requiring nickel to be 2+ to achieve a net charge of zero. The final name is 'Nickel 2 Sulfide', with the Roman numeral indicating the charge of nickel. The video concludes by explaining how to write the formula from the name.

What type of compound is formed by nickel and sulfur?

• Metallic compound

• Ionic compound

• Covalent compound

• Molecular compound

Which element in NiS is a transition metal?

• Nickel

• Neither sulfur nor nickel

• Sulfur

• Both sulfur and nickel

How is the name 'nickel sulfide' derived from its components?

• By adding 'ate' to nickel

• By adding 'ate' to sulfur

• By adding 'ide' to sulfur

• By adding 'ide' to nickel

What suffix is used for sulfur in the name of NiS?

• ous

• ate

• ite

• ide

Why is Roman numeral II used in the name of NiS?

• To indicate the number of nickel atoms

• To indicate the charge of sulfur

• To indicate the charge of nickel

• To indicate the number of sulfur atoms

What is the correct formula for nickel(II) sulfide?

• NiS2

• NiS

• Ni2S3

• Ni2S