Which element or elements in the periodic table are most similar to the reactivity to chlorine

Fluorine is the most reactive and combines with most elements from around the periodic table.

If you can try answer my question it’s English should be pretty easy for middle school or high school people ok bye

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you