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What does DB stand for?

DB stands for Dubnium (element 105)

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hydrogen + xenon + barium + tantalum + boron + praseodymium + iridium + hassium + plutonium + thallium + germanium + scandium + thulium + einsteinium + erbium + cadmium + beryllium + tin + actinium + seaborgium + carbon + fluorine + indium + osmium + nitrogen + potassium + lead + protactinium + silicon + lutetium + rhenium + mercury + argon + neodymium + platinum + thorium lanthanum + oxygen + terbium + radon + samarium + dysprosium + iodine + bohrium + aluminium + chromium + palladium + tungsten + lithium + caesium + dubnium + meitnerium + niobium + ytterbium + gallium + arsenic + iron + sodium + nobelium + francium + astatine + strontium + copper + gadolinium + yttrium + selenium + curium + chlorine + promethium + gold + uranium + antimony Mike Keith After earning a M.
In February, the International Union of Pure and Applied Chemistry (IUPAC) released a new roster of proposed names for the elements numbered 104 to 109: rutherfordium (104), dubnium (105), seaborgium (106), bohrium (107), hassium (108), and meitnerium (109).
The mystery element is most similar to which three elements: A niobium (Nb), tantalum (Ta), dubnium (Db) B zirconium (Zr), hafnium (Hf), rutherfordium (Rf) C yttrium (Y), lutetium (Lu), lawrencium (Lr) D rhodium (Rh), iridium (Ir), meitnerium (Mt) (5) All motels are solid at roam temperature.
IUPAC's recommended element names revealed Atomic Voting number Name Symbol in favor(a) 101 Mendelevium Md 20 102 Nobelium No 20 103 Lawrencium Lr 20 104 Dubnium Db 19 105 Joliotium Jl 18 106 Rutherfordium Rf 18 107 Bohrium Bh 20 108 Hahnium Hn 19 109 Meitnerium Mt 20 (a)Voters were the 20 members of the International Union of Pure & Applied Chemistry's Commission on Nomenclature of Inorganic Chemistry.