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. Options expire worthless whenever they go into expiration out of the money.
A single molecule of water consists of three atoms. H2O is built from a single atom of oxygen that is single-bonded with two atoms of hydrogen.
Now, the numbers of atoms in a droplet of water is 3x the number of molecules: 1  atoms in a drop of water = 3 atoms/molecule x 1.67 x 1021 molecules. 2  atoms in a drop of water = 5.01 x 1021 atoms.