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.
Hardiness refers to a plant's ability to tolerate temperature. The USDA Plant Hardiness Zone map divides the United States into zones according to the average minimum cold temperature. A hibiscus brought to Illinois from Southern Florida will not survive outdoors all year due to its hardiness. Most of Illinois is classified zone 5. Plant material listed for this zone is able to survive the average minimum temperature between -10Â° and -20Â°F. Zone 5 has been further divided into 5a and 5b. Zone 5a average minimum temperature is -15 to -20Â°F, and zone 5b average minimum temperature is -10 to -15Â°F.