Answer:
Sodium to form sodium chloride.
Explanation:
Hello.
In this case, since the reactivity of the elements belonging to same groups in close periods are intimately related to each other, we can infer that since lithium is able to react with chlorine to yield lithium chloride (LiCl), we can infer that the element reacting with chlorine and yielding a compound with similar properties to the LiCl should be sodium which is just below lithium in the periodic table, thus forming sodium chloride (NaCl).
Best regards.
