Question

1. choose the best answer.

what is used to represent the simplest chemical unit of an ionic compound?
formula unit
oxidation number
chemical formula
lattice energy

1. choose the best answer.

_____ represents the number of electrons gained, lost, or shared for an atom to become stable.
system
oxidation number
ratio

Explanation:

Question 14

To determine the best answer, we analyze each option:

• "formula unit": Defined as the simplest ratio of ions in an ionic compound, representing its simplest chemical unit.
• "oxidation number": Represents the charge an atom would have if electrons were transferred completely, not the simplest unit.
• "chemical formula": A general term for representing a compound, but for ionic compounds, the specific term for the simplest unit is formula unit.
• "lattice energy": Related to the energy of ionic lattice formation, not the unit representation.

Analyzing each option:

• "System": Not related to electron transfer/gaining/losing for stability.
• "Oxidation number": Represents the number of electrons an atom gains, loses, or shares to achieve stability (like in bonding).
• "Ratio": A general comparison, not specific to electron changes for stability.

Answer:

A. formula unit

Question 15