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.
Your monthly cycle starts and is measured from the first day of one period, until the first day of the next. A normal cycle should be about 28-32 days, but many women vary from this number to some degree. Ovulation will occur in the middle of this number-usually about 12 to 16 days from the first day of your last period. If you are unsure when you ovulate and would like to find the ideal time to conceive (or use extra caution), keep a calendar of your cycle length for a few months to find your average.