Nickel 2 Chromate Concepts

The video tutorial explains how to write the formula for nickel 2 chromate. It begins by identifying the element symbol for nickel and its charge, followed by an explanation of the chromate ion as a polyatomic ion with a charge of two minus. The tutorial emphasizes the importance of balancing charges to achieve a neutral compound, resulting in the formula NiCrO4. The video concludes by explaining the significance of the Roman numeral in the compound's name.

What is the element symbol for nickel in Nickel 2 Chromate?

• Nc

• Nk

• N

• Ni

What is the charge of the chromate ion?

• 3-

• 1-

• 2+

• 2-

Where can you find the chromate ion if it's not on the periodic table?

• On a periodic table

• In a dictionary

• On a table of polyatomic ions

• In a chemistry textbook

Why is Nickel 2 Chromate considered neutral?

• Because it has no charge

• Because it is a liquid

• Because the charges of nickel and chromate balance each other

• Because it is a gas

What is the formula for Nickel 2 Chromate?

• NiCr2O7

• Ni2CrO4

• NiCrO4

• Ni(CrO4)2

What does the Roman numeral in Nickel 2 Chromate indicate?

• The number of chromate ions

• The charge of the nickel ion

• The number of nickel atoms

• The atomic number of nickel

If given the formula NiCrO4, what can you infer about the nickel ion?

• It is nickel 4

• It is nickel 3

• It is nickel 2

• It is nickel 1