Cobalt and Nitrogen Compounds

The video tutorial explains how to write the chemical formula for Cobalt 2 Nitride. It begins by identifying the element symbols for Cobalt and Nitrogen, noting that Cobalt is a transition metal with a 2+ charge and Nitrogen has a 3- charge. The tutorial then demonstrates the crisscross method to balance these charges, resulting in the formula CO3 N2. Finally, the video verifies the formula by ensuring the net charge is zero, confirming the correctness of the formula.

What is the symbol for Cobalt on the periodic table?

• Cl

• Ct

• Cb

• Co

Which of the following is NOT a possible form of nitrogen compound?

• Nitrite

• Nitrate

• Nitride

• Nitrogenate

What is the charge of Cobalt in Cobalt 2 Nitride?

• 1+

• 4+

• 2+

• 3+

What is the ionic charge of Nitrogen?

• 2-

• 1-

• 3-

• 4-

What method is used to balance the charges in Cobalt 2 Nitride?

• Cross-multiply method

• Crisscross method

• Substitution method

• Addition method

How many Nitrogen atoms are in the formula CO3 N2?

• 3

• 4

• 2

• 1

What is the net charge of the compound CO3 N2?

• 3+

• 2+

• 1+

• 0

What is the correct formula for Cobalt 2 Nitride?

• CO2 N

• CO N2

• CO3 N2

• CO2 N3