Question

consider the lewis dot structures of potassium and bromine atoms.
k ·br:
which lewis dot structure best represents the compound formed when potassium and bromine react?

Explanation:

Step1: Determine the type of bond

Potassium (K) is a metal and bromine (Br) is a non - metal. They form an ionic bond. In an ionic bond, metals lose electrons and non - metals gain electrons.

Step2: Analyze electron transfer

Potassium has one valence electron. It loses this electron to become \(K^{+}\). Bromine has seven valence electrons. It gains one electron to complete its octet and becomes \(Br^{-}\).

Step3: Write the Lewis dot structure for the compound

The Lewis dot structure of the ionic compound \(KBr\) should show the cation \(K^{+}\) and the anion \(Br^{-}\) with its full octet of electrons. The correct representation is \([K]^{+}[:\ddot{Br}:]^{-}\)

Answer:

The first option \([K]^{+}[:\ddot{Br}:]^{-}\)