Zinc Phosphide Chemistry Concepts

The video tutorial explains how to write the formula for zinc phosphide. It begins by identifying the element symbols for zinc and phosphorus, noting their ionic charges. The tutorial then demonstrates the crisscross method to balance these charges and derive the correct formula, Zn3P2. Finally, it verifies the formula by ensuring the net charge is zero, confirming the accuracy of the process.

What is the symbol for zinc when writing the formula for zinc phosphide?

• Z

• Zp

• Zc

• Zn

Which group does phosphorus belong to on the periodic table?

• Group 13

• Group 1

• Group 18

• Group 17

What is the ionic charge of zinc in zinc phosphide?

• 1+

• 3+

• 2+

• 4+

Why must the charges in zinc phosphide add up to zero?

• Because it is a neutral compound

• Because it is a metal

• Because it is a polyatomic ion

• Because it is a covalent compound

What method is used to balance the charges in zinc phosphide?

• Crisscross method

• Addition method

• Cross-multiplication method

• Substitution method

What is the formula for zinc phosphide derived using the crisscross method?

• Zn2P3

• ZnP

• ZnP2

• Zn3P2

How do you verify the formula for zinc phosphide?

• By checking the color of the compound

• By ensuring the net charge is zero

• By measuring the mass

• By checking the solubility

What is the net charge of zinc phosphide when the formula is correct?

• 3-

• 2+

• 0

• 1+

Who is the presenter of the video tutorial on zinc phosphide?

• Dr. A

• Dr. B

• Dr. C

• Dr. D