.

Also, is Metal positively or negatively charged?

Metal atoms lose the electron, or electrons, in their highest energy level and become positively charged ions. Non-metal atoms gain an electron, or electrons, to become negatively charged ions.

Also, can metal be charged? Metals can be charged if sufficient electrons can be removed through friction but there will still be no localisation of charge. While in case of insulators when electrons are removed or added through friction they can't get redistributed as electrons are not free ,thus making them charged.

are metals always positive?

Notice that all metals lose electrons to form positive ions. Group 1 metals commonly lose only one electron to form ions with a single positive charge. Other metals, like the transition metals, also always form positive ions, but the number of electrons they may lose varies. Nonmetals form ions by gaining electrons.

Is Iron negatively charged?

Since Iron, Fe, is a transition metal it usually will conform it's positive charge to an element or compound that already has a set negative charge for example iron is a transition metal and because its orbitals are so close energy wise they tend to give up either 2 or 3 electrons at time.