 
 <prompt> ```Di Hadean () na geologic eon of di Earth wey dey happen before di Archean. E start wen di Earth form about 4.6 billion years ago and end, as defined by di ICS, 4 billion years ago. Di geologist Preston Cloud come up with di term for 1972, originally to label di period before di earliest-known rocks on Earth. W. Brian Harland later come up with an almost synonymous term: di "Priscoan period". Other, older texts simply refer to di eon as di Pre-Archean.

"Hadean" (from Hades, di Greek god of di underworld) describe di hellish conditions wey dey happen for Earth dat time: di planet just form and e still dey very hot because of di recent accretion, di plenty short-lived radioactive elements, and frequent collisions with other Solar System bodies.

Since few geological traces of dis eon remain for Earth, there no official subdivision. However, di Lunar geologic timescale embrace several major divisions relating to di Hadean, so dem sometimes dey use am informally to refer to di same periods of time on Earth.

Di Lunar divisions be:

In 2010, an alternative scale dey proposed wey include di addition of di Chaotian and Prenephelean Eons wey dey happen before di Hadean, and divide di Hadean into three eras with two periods each. Di Paleohadean era consist of di Hephaestean () and di Jacobian periods (). Di Mesohadean dey divided into di Canadian () and di Procrustean periods (). Di Neohadean dey divided into di Acastan () and di Promethean periods (). , dis one never dey adopted by di IUGS.``` <response>: 1. Hadean
2. no
3. Archean.
4. about 4.6 billion years ago
5. the formation of the Earth
6. 4 billion years ago.
7. Preston Cloud
8. 1972,
9. Priscoan period
10. Pre-Archean.
11. the hellish conditions
12. yes
13. yest
14. no
15. In 2010,
16. yes
17. the Chaotian and Prenephelean
18. Three
19. 2 periods each.
20. no 