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For example, thorium perchlorate is very water-soluble and crystallises from acidic solutions as the tetrahydrate Th(ClO 4) 4 •4H 2 O, while thorium nitrate forms tetra- and pentahydrates, is soluble in water and alcohols, and is an important intermediate in the purification of thorium and its compounds. [25]
Despite thorium's position in the f-block of the periodic table, it has an anomalous [Rn]6d 2 7s 2 electron configuration in the ground state, as the 5f and 6d subshells in the early actinides are very close in energy, even more so than the 4f and 5d subshells of the lanthanides: thorium's 6d subshells are lower in energy than its 5f subshells ...
For each atom the subshells are given first in concise form, then with all subshells written out, followed by the number of electrons per shell. For phosphorus (element 15) as an example, the concise form is [Ne] 3s 2 3p 3 .
For example, the first (K) shell has one subshell, called 1s; the second (L) shell has two subshells, called 2s and 2p; the third shell has 3s, 3p, and 3d; the fourth shell has 4s, 4p, 4d and 4f; the fifth shell has 5s, 5p, 5d, and 5f and can theoretically hold more in the 5g subshell that is not occupied in the ground-state electron ...
But When Scientists Sailed There In November 2012, They Found Open Water Instead Of Solid Ground Image credits: Sanjoy Sarkar #36 Discovered This Giant Human Today. -0.294722,-91.308333
Electron shells are made up of one or more electron subshells, or sublevels, which have two or more orbitals with the same angular momentum quantum number l. Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to .
The oldest message in a bottle ever found was 131 years and 223 days old when it was discovered, Guinness World Records said in a statement. Australians Tonya and Kym Illman found the message on ...
Archaeologists digging through a French cliffside located a 200-year-old message in a bottle. Amidst much speculation, the team opened it to find a message from another archaeologist digging at ...