An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

Assessment: WAEC SSCE - Chemistry - 2000 (Objective) Subject: Chemistry

Question 1 Report

An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

Answer Details
The correct formula for the compound of element Z would be Z2O3. This is because Z has a combining power of 3, meaning that it can form compounds by bonding with three other elements. In Z2O3, each Z atom is bonded to three O atoms, satisfying Z's combining power of 3. None of the other options satisfy this requirement, as they either have too few or too many atoms of Z.
Read lesson note on Kinetic Theory Of Matter And Gas Laws (JAMB)
Read lesson note on Chemical Combination (JAMB)
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