Barium Phosphide Charge Balancing

The video tutorial explains how to write the formula for barium phosphide. It begins by identifying barium and phosphorus on the periodic table and discussing their charges. The crisscross method is introduced to determine the correct formula, ensuring the charges balance to zero. The formula is verified by checking the net charge, confirming that Ba3P2 is correct. The video concludes with a summary of the process.

Which element is identified as a metal in the video?

• Phosphorus

• Barium

• Oxygen

• Nitrogen

What is the charge of barium in the compound?

• 1+

• 3+

• 2+

• 4+

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

• To make it a stable compound

• To ensure it is an ionic compound

• To balance the periodic table

• To maintain a neutral compound

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

• Cross-multiplication

• Substitution method

• Crisscross method

• Addition method

What is the formula derived using the crisscross method?

• BaP2

• BaP

• Ba3P2

• Ba2P3

How many barium atoms are needed to balance the charge of phosphorus?

• Four

• Three

• Two

• One

What is the total positive charge contributed by barium atoms?

• 4+

• 5+

• 6+

• 7+

What is the total negative charge contributed by phosphorus atoms?

• 7-

• 4-

• 5-

• 6-

What is the net charge of the barium phosphide compound?

• 2-

• 1-

• 0

• 1+

What is the final formula for barium phosphide presented in the video?

• BaP

• BaP2

• Ba2P3

• Ba3P2