Potassium bromine and krypton are elements in period 4 of the Periodic Table
Bromine exists as a molecule. Draw a dot-and-cross' diagram to show the bonding in a molecule of bromine.

Explanation

To draw a dot-and-cross diagram for a molecule of bromine (Br₂), we need to follow these steps:

### Step 1: Identify the Atomic Structure of Bromine
Bromine (Br) is in Group 17 of the periodic table, which means it has 7 valence electrons. Each bromine atom has the electronic configuration of [Ar] 4s² 4p⁵.

### Step 2: Represent the Valence Electrons
In the dot-and-cross diagram, we will represent the valence electrons of each bromine atom. We can use dots (•) for the valence electrons of one bromine atom and crosses (×) for the valence electrons of the other bromine atom.

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