The Lewis model predicts that the formula of a compound formed between bromine and aluminum is:

Question

Quizplus · Accepted Answer

Aluminum (Al) has three valence electrons and bromine (Br) has seven valence electrons. Aluminum will lose its three electrons to form Al³⁺, and each bromine will gain one electron to form Br⁻. Therefore, three bromine atoms are needed to balance the charge of one aluminum atom, resulting in the formula AlBr₃.

The Lewis Model Predicts That the Formula of a Compound