In a Lewis electron dot diagram, fluorine (F) would have 7 dots placed around it. This is because fluorine has 7 valence electrons. The Lewis dot diagram represents the valence electrons of an atom using dots placed around the chemical symbol of the element.
Fluorine is in Group 17 (Group VIIA) of the periodic table, which means it has 7 valence electrons. These electrons are represented as dots around the symbol ‘F’. The arrangement of the dots follows the rule of placing one dot on each side of the symbol before pairing them up.
So, the correct answer is b) 7.