Question

how many valence electrons will be found in an atom of bromine?
35
br
bromine
79.90
1 valence electrons
2 valence electrons
7 valence electrons
35 valence electrons

Explanation:

Step1: Determine Bromine's Group

Bromine (Br) has an atomic number of 35. In the periodic table, elements in Group 17 (halogens) have 7 valence electrons. Bromine is in Group 17.

Step2: Recall Valence Electron Rule

For main - group elements, the number of valence electrons is equal to the group number (for Groups 1 - 2 and 13 - 18). Group 17 elements have 7 valence electrons. So bromine, being in Group 17, has 7 valence electrons.

Answer:

7 valence electrons (the option: 7 valence electrons)