Division of Periodic Table into s-, p-, d- and f blocks on the Basis of Electronic Configurations. The long form of periodic table can be divided into four main blocks. These are s-, p-, d- and f-blocks. The division of elements into blocks is primarily based upon their electronic configuration as shown in Fig. 6.2.
What is it? The EquiCam is the ultimate piece of filming equipment for equestrian sports, a miniature super light weight camera (just 38g) and two special riding hat camera mounts (elastic hat strap and a hat mount). Film your rides in full 1080p HD for fun and for safety.
Every motorcycle and motor-driven cycle must be equipped with at least 1 but not more than 3 headlamps displaying white lights. The height of the headlamps must be not more than 140 cm and not less than 60 cm from the ground. The driver and any passenger of a motorcycle and motor-driven cycle must wear a safety helmet.