Chromium and Nitrogen Ionic Charges

The video tutorial explains how to write the formula for chromium 6 nitride. It begins by identifying the element symbols and their ionic charges, emphasizing the need for the compound to be neutral. The tutorial then demonstrates how to balance the charges of chromium and nitrogen to achieve a net charge of zero. Finally, it explains how to name the compound based on its formula, ensuring the correct representation of the ionic charges in the name.

What is the symbol for chromium and what charge does it have in chromium 6 nitride?

• Cr with a 2+ charge

• Cr with a 3+ charge

• Cr with a 6+ charge

• Cr with a 4+ charge

Which group is nitrogen in on the periodic table, and what is its ionic charge?

• Group 13, 3- charge

• Group 15, 3- charge

• Group 16, 2- charge

• Group 14, 2- charge

How many nitride ions are needed to balance the charge of one chromium ion in chromium 6 nitride?

• Four nitride ions

• Three nitride ions

• Two nitride ions

• One nitride ion

What is the net charge of chromium 6 nitride?

• 6+

• 3-

• 0

• 6-

What does the Roman numeral in the name chromium 6 nitride indicate?

• The number of nitrogen atoms

• The charge of the chromium ion

• The number of chromium atoms

• The charge of the nitride ion