Key Concepts. 1  The electrons on the outermost energy level of the atom are called valence electrons. 2  The valence electrons are involved in bonding one atom to another. 3  The attraction of each atomâs nucleus for the valence electrons of the other atom pulls the atoms together.
NTSC is the format used in the United States and Canada. NTSC stands for National Television Standard Committee which established the American TV broadcast TV standard as a 525 line broadcast. The NTSC system has higher frame rate (60 Hz) which reduces visible flicker and picture noise.
NTSC: This is USA, Canada, and the rest of the world's release, which means the box art of the item is in english, with a censorship lable on it based on , T, M, E etc etc). NTSC are sold on Ebay USA. For example: This is the NTSC version of the game.