Selenium and Tin Compounds

This video tutorial explains how to write the chemical formula for tin(IV) selenide. It begins by identifying the element symbols for tin and selenium, noting their respective ionic charges. The tutorial then demonstrates how to balance these charges to form a neutral compound, resulting in the formula SnSe2. The video concludes with a summary of the process and the final formula.

What does the Roman numeral IV indicate in the context of tin(IV) selenide?

• The charge of the tin ion

• The number of tin atoms in the compound

• The atomic number of tin

• The group number of tin in the periodic table

Where is selenium located on the periodic table?

• Below oxygen in group 16

• Above oxygen in group 16

• Next to tin in group 14

• In group 18 with the noble gases

What is the ionic charge of selenium?

• 4-

• 2-

• 4+

• 2+

How do you balance the charges to form a neutral compound for tin(IV) selenide?

• By adding more selenium atoms

• By ensuring the total positive and negative charges are equal

• By changing the charge of tin

• By using a catalyst

What is the correct formula for tin(IV) selenide?

• Sn2Se3

• Sn2Se

• SnSe2

• SnSe