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.
This map is reproduced from Agriculture Canada and shows the areas of winter hardiness for ornamental plants in Ontario and Western Quebec. Plant Hardiness Zones in Canada. The most important element in plant survival is minimum temperature during the winter. given zone on this map corresponds only approximately to a zone of the same number in the United States Department of Agriculture Plant Hardiness Zone Map, which has been in use in Canada for a number of years. This present map, however, presents more detail for Canada.