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In its best-known form, it is a green, crystalline material originating from Superman's home world of Krypton that emits a unique, poisonous radiation that can weaken and even kill Kryptonians. Kryptonite radiation can be transmitted through any element except lead. There are other varieties of kryptonite, such as red and gold kryptonite, which ...
Kal-El can lead an alter ego as Clark Kent because Kryptonians appear identical to humans. Also, in both Silver Age and Modern Age continuity, Kryptonians have more than one ethnic group, such as dark-skinned Kryptonians from Krypton's Vathlo Island that resemble Earth humans of West African, Negrito, Melanesian, and Indigenous Australian descent and a group from the continent of Twenx that ...
Quex-Ul is a Kryptonian who is exiled to the Phantom Zone for killing Rondors, an endangered species, to profit off their healing horns. [1] He and Superman later learn that Quex-Ul had been controlled by another Kryptonian, Rog-Ar. Afterward, Quex-Ul throws himself into his gold kryptonite trap to save Superman, losing his powers and memory.
A radioactive crystal originating from the planet Krypton that is harmful to Kryptonians. Kryptonite comes in various colors with differing effects, and has been variously depicted as an element and compound. Kyber crystal: Star Wars: A rare, semi-sentient, crystalline material found across the galaxy.
Like the other noble gases, krypton is chemically highly unreactive. The rather restricted chemistry of krypton in the +2 oxidation state parallels that of the neighboring element bromine in the +1 oxidation state; due to the scandide contraction it is difficult to oxidize the 4p elements to their group oxidation states. Until the 1960s no ...
Krypton is usually portrayed in comics as the home of a fantastically advanced civilization, which is destroyed when the planet explodes. As originally depicted, all the civilizations and races of Krypton perished in the explosion, with one exception: the baby Kal-El who was placed in an escape rocket by his father, Jor-El, and sent to the planet Earth, where he grew up to become Superman.
Luthor engineers a fake Kryptonian invasion, but Superman stops him and Luthor's schemes are revealed to the world after much of his LexCorp headquarters are destroyed. In the final seconds of the battle, Superman discovers the video monitor invented by Luthor which had managed to make contact with pre-destruction Krypton.
Krypton has a density of 3.749 × 10 −3 g/cm 3, liquifies at −153.415 °C, and solidifies at −157.37 °C. It has a high ionisation energy (1350.8 kJ/mol), low electron affinity (estimated at −60 kJ/mol), and high electronegativity (2.966 χSpec). Krypton can be reacted with fluorine to form the difluoride, KrF 2. The reaction of KrF