sodium!
Sodium
the highly reactive metal is potassium
NO!!! Chlorine is a highly reactive poisonous green gas.
Chlorine is a very reactive non-metal. It readily combines with other elements to form compounds and is highly electronegative, meaning it has a strong tendency to gain electrons in chemical reactions.
The other highly reactive element in period 2 is fluorine, a non-metal. Both lithium and fluorine readily form compounds due to their high reactivity.
Oxygen (O2) is a non-metal. It is a highly reactive gas that is essential for life and commonly found as part of compounds in nature.
Florine is a non-metal. It belongs to the halogen group in the periodic table and is highly reactive, forming compounds with many elements.
The metal with the symbol K is potassium. It is a soft, silvery-white metal that is highly reactive and is commonly found in compounds rather than in its pure form.
Potassium is a metal. It is a soft, silvery-white alkali metal that is highly reactive and can easily form compounds with other elements.
Silver is not highly reactive and is considered a noble metal. It does not easily react with most chemicals but can react with sulfur compounds in the air, leading to tarnishing or discoloration of the metal.
Sodium as an element is metal but as compounds with chlorine,florine,iodine etc they become salt compounds.
Potassium is the most reactive element among potassium, iron, and aluminum. It is a highly reactive metal that easily forms compounds by losing one electron to achieve a stable electron configuration.