The mass of an atom of another element is the ratio of its mass to the mass of a carbon atom. The mass number for neon is 20 but the atomic mass is 20.1797. The mass of the atoms increases. from left to right across the table.
Illinois growing zones range from zones 5-7. By looking at the map above and locating the approximate area in which you live, you will be able to find your Illinois hardiness planting zone. Simply compare the color-coded zones for your area with those of the legend on the right of the map.
USDA Hardiness Zone Finder. The USDA Hardiness Zone Map divides North America into 11 separate planting zones; each growing zone is 10Â°F warmer (or colder) in an average winter than the adjacent zone. If you see a hardiness zone in a gardening catalog or plant description, chances are it refers to this USDA map. To find your USDA Hardiness Zone, enter your zip code or use the map below. Click here for more information about hardiness maps. Find your zone using the map below or enter your zip code.