- Donkey Kong (1981 video game) (Wikipedia)
Donkey Kong is a 1981 arcade video game developed and published by Nintendo. As Mario (also sometimes known at the time as “Jumpman”), the player runs and jumps on platforms and climbs ladders to ascend a construction site and rescue Pauline from a giant gorilla, Donkey Kong. It is the first game in the Donkey Kong series and Mario’s first appearance in a video game.
- Halogen (Wikipedia)
The halogens (/ˈhælədʒən, ˈheɪ-, -loʊ-, -ˌdʒɛn/) are a group in the periodic table consisting of six chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and the radioactive elements astatine (At) and tennessine (Ts), though some authors would exclude tennessine as its chemistry is unknown and is theoretically expected to be more like that of gallium. In the modern IUPAC nomenclature, this group is known as group 17.