Electron Configuration and Valence Electrons. The electrons in an atom fill up its atomic orbitals according to the Aufbau Principle; Aufbau, in German, means building up..ach element has a number of valence electrons equal to its group number on the Periodic Table. This table illustrates a number of interesting, and complicating, features of electron configuration. Figure %: The periodicity of valence electrons. First, as electrons become higher in energy, a shift takes place.
I took the pregnancy test early at 2 & 3 weeks pregnant, and it came up negative twice. Yet I could feel something was different about my body, even though I had my cycle it fell short a few days, and was very light. Afterwards, I had breast tenderness, and dizziness.
3. Medication: There are a few drugs which have the pregnancy hormone in that may give a false positive result. When I took a urine pregnancy test, I was 3 weeks pregnant. So, I would say as early as day 26 of a regular 28 day menstrual cycle.o,if you think you're pregnant, it might seem like a really long wait, but doctors recommend you don't take a test until your period is a day overdue. However, the First Response Pregnancy Test says that it can detect pregnancy hormones in 52% of women three days before their period is due.