This is why, at room temperature, iodine, which has the largest molecule, is a solid, bromine, which is the next in line in terms of size, is a liquid, and fluorine and chlorine, the smallest of the molecules, are both gases. So remember, nonpolar molecules only exhibit weak London dispersion forces.
For most women, the length of time between ovulation (when an egg is released from the ovary) and their monthly period is between 12 to 16 days (this is called the luteal phase). The first day of your menstrual cycle is the first day of your period (day 1). The period usually then lasts anything from 3 to 7 days. Youâll probably find that if you get any period pains, theyâll be at their worst in the first few days of your period.
Time of ovulation. Women often believe that ovulation occurs mid-cycle. It actually occurs 12-16 days before the next period starts. So, although a woman with a 28-day cycle may ovulate mid-cycle (between day 12 and day 16), a woman with a 36-day cycle will ovulate between day 20 and day 24. For women with regular cycles, an easy way to approximate the time of ovulation is to subtract 16 from the number of days in the cycle and then add 4.