Mercury-199 is composed of 80 protons, 119 neutrons, and 80 electrons.
The process referred to here is <u>filtration.</u>
I use small cardboard<span> boxes for organizing drawers, etc,---also break them down and use it in the garden to kill weeds, and I add some to my compost. ... side to one edge that's somewhat shorter </span>than<span> the magazine, to enable one to remove one magazine without removing the </span>whole<span> box from the shelf.</span>