Many "nickel" items contain large amounts of other metals so they're not strongly attracted however. For example, US 5ยข coins are called nickels but they're actually 75% copper.
Most types of Iron are magnetic, however depending on its composition and purity, there are kinds that are not magnetic. For example, Steel is mostly Iron, Carbon, and a few other lesser materials,...
Materials such as nickel , cobalt , iron which are attracted by a magnet are called magnetic materials . Materials such as plastic , cotton , wool which are not attracted by magnet are called non -...