Question

Writing and Naming Ionic Compounds. I need the formula for each pair combined.

Potassium (K) + Oxygen (O)
Sodium (Na) + Bromine (Br)
Lithium (Li) + Sulfur (S)
Calcium (Ca) + Phosphorous (P)
Aluminum (Al) + Chlorine (Cl)
Magnesium (Mg) + Iodine (I)
A) KO, NaBr, Li₂S, Ca₃P₂, AlCl₃, MgI₂
B) K₂O, NaBr, Li₃S, Ca₃P₂, AlCl₃, Mg₂I
C) K₃O, NaBr₂, Li₂S, Ca₃P, AlCl, MgI
D) KO₂, Na₂Br, LiS, Ca₃P, Al₂Cl₃, Mg₂I

Answer 1

The correct formulas for the binary ionic compounds are K2O, NaBr, Li2S, Ca3P2, AlCl3, and MgI2. This matches with option A.

Step-by-step explanation:

The process of writing formulas for binary ionic compounds involves pairing ions with opposite charges to create an electrically neutral compound. For each given pair of elements, the correct formula is written based on the ionic charges of the metal and non-metal ions. Here are the correct formulas for the given pairs:

• Potassium (K) + Oxygen (O) = K2O
• Sodium (Na) + Bromine (Br) = NaBr
• Lithium (Li) + Sulfur (S) = Li2S
• Calcium (Ca) + Phosphorous (P) = Ca3P2
• Aluminum (Al) + Chlorine (Cl) = AlCl3
• Magnesium (Mg) + Iodine (I) = MgI2

Therefore, the correct option is A) K2O, NaBr, Li2S, Ca3P2, AlCl3, MgI2.