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.
Pennsylvania Planting Zones â USDA Map Of Pennsylvania Growing Zones. Click on the image above to see a larger version. Pennsylvania Zones â Understanding Plant Hardiness. One of the first things that any new gardener should do is find where he or she lives on the Pennsylvania USDA plant hardiness map. Click on the map above to enlarge it and find your plant hardiness zone.