I think d is wrong because Everything else is correct for sure. also, minerals vary in the position they hold and have different chemical compounds.
chlorine has the atomic mass of 35.5 and is a non metal in the halogen family
Well I'm sure many a time you've seen on some science experiment someone wrap a copper wire around a nail well thats generally the idea for electromagnets you get a solid piece of iron which is the only metal that is magnetic and you wrap a copper wire around it and the idea is to make two opposing magnetic poles by aligning the molecules with a electrical charge (a battery) so now with all three pieces assembles you have a copper wire attached to two sides of a battery and wrapped around a nail
