step 5: which is the correct chemical formula for the ionic compound potassium iodide?\na. ki\nb. $k_2i$\nc…
step 5: which is the correct chemical formula for the ionic compound potassium iodide?\na. ki\nb. $k_2i$\nc. $ki_2$\nd. $k_2i_3$
Answer
Explanation:
Step1: Identify ion charges
Potassium (Group 1) forms $\text{K}^+$; Iodine (Group 17) forms $\text{I}^-$.
Step2: Balance charge for neutrality
1 positive charge cancels 1 negative charge, so 1 $\text{K}^+$ pairs with 1 $\text{I}^-$.
Step3: Write the formula
Combine symbols with subscripts (1 is omitted): $\text{KI}$
Answer:
A. KI