by nuclear connection by physically combining by magnetic connection by chemically combining
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Use The Periodic Table of the Elements and the information below to answer the question. Magnesium metal (Mg) is grayish-white in color and reacts actively with water. Fluorine (F2) is a greenish-yellow gas at room temperature and is a member of the halogen family. These two elements react to produce magnesium fluoride (MgF2), a chemical commonly used in making windows and lenses. How do the elements magnesium (Mg) and fluorine (F2) produce the compound magnesium fluoride (MgF2)?
Possibilities:
- by nuclear connection
- by physically combining
- by magnetic connection
- by chemically combining

by chemically combining