Expire Worthless is when options enter expiration out of the money and expire without any remaining value. Expiring worthless is one of the most common terms used in options trading.
3 ATOM COUNT. It is hard to grasp just how small the atoms that make up your body are until you take a look at the sheer number of them. An adult is made up of around 7,000,000,000,000,000,000,000,000,000 (7 octillion) atoms.
How many protons and electrons are in an atom with atomic number of 17? 17 protons and 17 electrons. Atomic number is defined to be the number of protons in the nucleus.