Just need some point sorry
Answer: Fluorine
Explanation: It belongs in the same group as Bromine
The p sublevel holds 6 electrons because it has 3 orbitals.
Explanation:
The more reactive element replaces less reactive element during chemical reaction.
Since, potassium is more reactive than beryllium. When potassium reacts with beryllium choride, it replaces beryllium and forms potassium chloride and produces beryllium.