Naming and Charges of Compounds

The video tutorial explains how to name the compound CO3 P2. It begins by identifying the elements Cobalt and Phosphorus from the periodic table. The tutorial then guides viewers through the process of forming the compound name, Cobalt phosphide, by changing the ending of Phosphorus to 'ide'. Since Cobalt is a transition metal, the charge must be specified using Roman numerals. The tutorial calculates the charges, showing that Cobalt has a 2+ charge, resulting in the final name: Cobalt 2 phosphide.

What is the first step in naming the compound CO3 P2?

• Write the formula

• Determine the charge

• Identify the metal

• Identify the non-metal

Which element is identified as a transition metal in CO3 P2?

• Phosphorus

• Oxygen

• Cobalt

• Carbon

How do you modify the ending of the non-metal when naming CO3 P2?

• Add 'ium'

• Add 'ite'

• Add 'ide'

• Add 'ate'

What is the charge of the phosphide ion in CO3 P2?

• 2-

• 3-

• 1-

• 4-

How many phosphide ions are present in CO3 P2?

• 1

• 2

• 4

• 3

What Roman numeral is used to indicate the charge of Cobalt in CO3 P2?

• IV

• III

• II

• I

What is the final name for the compound CO3 P2?

• Cobalt(IV) phosphide

• Cobalt(III) phosphide

• Cobalt(II) phosphide

• Cobalt phosphide