moscovium and symbol mc for the element 115
Moscovium Moscovium is an extremely radioactive element: its most stable known isotope, moscovium-290, has a half-life of only 0.8Â seconds.[8] In the periodic table, it is a p-block transactinide element. It is a member of the 7th period and is placed in group 15 as the heaviest pnictogen, although it has not been confirmed to behave as a heavier homologue of the pnictogen bismuth. Moscovium is calculated to have some properties similar to its lighter homologues, nitrogen, phosphorus, arsenic, antimony, and bismuth, and to be a post-transition metal, although it should also show several major differences from them. About 100 atoms of moscovium have been observed to date, all of which have been shown to have mass numbers from 287 to 290.
Early Christian art and architecture The dove is a symbol of peace and purity. It can be found with a halo or celestial light. In one of the earliest known Trinitarian images, "the Throne of God as a Trinitarian image" (a marble relief carved c. 400 CE in the collection of the Prussian Cultural Heritage Foundation), the dove represents the Spirit. It is flying above an empty throne representing God, in the throne are a chlamys (cloak) and diadem representing the Son. The Chi-Rho monogram, XP, apparently first used by Constantine I, consists of the first two characters of the name 'Christos' in Greek.