Q

# Predict the formulas of the stable binary compounds that would be formed by the combination of the following pairs of elements.Element 71 and fluorine

3.32    Predict the formulas of the stable binary compounds that would be formed by the combination of the                             following pairs of elements.

(f)Element 71 and fluorine

Hence, the formula of the compound is $LuF_{3}$ (Lutetium trifluoride).