Which physical property of iron made it popular for use in weapons?

a)magnetism
b)luster
c)malleability
d)ductility

What is the percentage composition of carbon in the compound ch4

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor