Beryllium Phosphide and Ionic Charges

The video tutorial explains how to write the formula for beryllium phosphide. It begins by identifying the element symbols and their ionic charges using the periodic table. The tutorial then demonstrates how to balance these charges to form a neutral compound, using the crisscross method to derive the formula Be3P2. Finally, the video verifies the formula by checking the net charge, ensuring it sums to zero.

What is the first step in writing the formula for beryllium phosphide?

• Determine the molecular weight

• Find the melting point

• Identify the element symbols

• Calculate the number of atoms

Which group in the periodic table does beryllium belong to?

• Group 4

• Group 3

• Group 2

• Group 1

What is the ionic charge of phosphorus?

• 1+

• 2+

• 3-

• 4-

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

• To ensure the compound is stable

• To make it a neutral compound

• To increase its solubility

• To enhance its conductivity

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

• Cross-multiplication method

• Addition method

• Substitution method

• Crisscross method

What is the formula for beryllium phosphide?

• BeP2

• Be3P2

• Be2P3

• BeP

How do you verify the formula for beryllium phosphide?

• By testing its reactivity

• By measuring its density

• By ensuring the net charge is zero

• By checking the color of the compound

What is the net charge of the correct formula for beryllium phosphide?

• 3-

• 0

• 2+

• 1+