Phosphorus and Its Ions Concepts

The video tutorial explains the differences between phosphorus, phosphide, phosphite, and phosphate. It begins with an introduction to the phosphorus atom, highlighting its neutral state. The phosphide ion is then discussed, emphasizing its negative charge due to added electrons. The tutorial further explores polyatomic ions, focusing on phosphate and phosphite, and provides a rule for remembering the difference in oxygen atoms. The video concludes with tips for memorizing these differences, using examples like sulfate and nitrate.

What is the charge of a neutral phosphorus atom?

• Variable

• Neutral

• Negative

• Positive

How many extra electrons does a phosphide ion have compared to a neutral phosphorus atom?

• Four

• Three

• Two

• One

What does the suffix 'ide' indicate in phosphide?

• A single atom ion

• An atom with a positive charge

• A polyatomic ion

• A neutral atom

What does the suffix 'ate' signify in chemical nomenclature?

• A single atom ion

• A polyatomic ion with more oxygen

• A neutral atom

• An ion with a positive charge

How many oxygen atoms are in a phosphate ion?

• Five

• Two

• Three

• Four

What is the chemical formula for a phosphite ion?

• PO4 3-

• PO3 3-

• PO2 3-

• PO5 3-

Which ion has one less oxygen atom than phosphate?

• Phosphate

• Phosphorus

• Phosphite

• Phosphide

Which of the following is a polyatomic ion?

• Phosphorus

• Phosphide

• None of the above

• Phosphite

What is the main difference between phosphide and phosphite ions?

• Number of neutrons

• Number of oxygen atoms

• Number of electrons

• Number of protons