Storing Potatoes. 1  1. Sort your potatoes. 2  2. Store healthy potatoes in a dark, dry place. 3  3. Keep the temperature cool.  4. Check your potatoes periodically for signs of 1  spoilage. 5. Cure your potatoes for long-term storage.
A period is a horizontal row in the periodic table. Although groups generally have more significant periodic trends, there are regions where horizontal trends are more significant than vertical group trends, such as the f-block, where the lanthanides and actinides form two substantial horizontal series of elements.
Figure %: A very small periodic table. The vertical columns of the periodic table (marked by yellow stripes in the figure) are called groups. The horizontal rows are called periods. There are 18 groups and 7 periods. In discussing the periodic table from here on out we will use the terms group and period. Down a group means moving from top to bottom; across a period means moving from left to right.