Atomic no 102
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NOBELIUMAtomic no. 102
ATNO14 for Si or 102 for No: Abbr.
nobeliumtransuranic element in the actinium series. Symbol: No; at. no.: 102
rhodiumssilvery-white metallic element of the platinum family, forming salts that give rose-colored solutions: used to electroplate microscopes and instrument parts to prevent corrosion. Symbol: Rh; at. wt.: 102.905; at. no.: 45; sp. gr.:
rhodiumsilvery-white metallic element of the platinum family, forming salts that give rose-colored solutions: used to electroplate microscopes and instrument parts to prevent corrosion. Symbol: Rh; at. wt.: 102.905; at. no.: 45; sp. gr.:
TUNGSTENAtomic no. 74
PALLADIUMAtomic No. 46
UNDERWATERAtomic bomb No. 5.
lawrenciuma transuranic element, atomic no. 103, discovered in 1961
lawrenciumsLAWRENCIUM, a transuranic element, atomic no. 103, discovered in 1961
hassiuma synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Hs; atomic no: 108
fermiuma transuranic element artificially produced by neutron bombardment of plutonium. Symbol: Fm; atomic no: 100; half-life of most stable isotope, 257Fm: 80 days (approx.)
indiuma rare soft silvery metallic element associated with zinc ores: used in alloys, electronics, and electroplating. Symbol: In; atomic no: 49; atomic wt: 114.82; valency: 1, 2, or 3; relative density: 7.31; melting pt: 156.63°C; boiling pt: 2073°C
thuliuma malleable ductile silvery-grey element occurring principally in monazite. The radioisotope thulium-170 is used as an electron source in portable X-ray units. Symbol: Tm; atomic no: 69; atomic wt: 168.93421; valency: 3; relative density: 9.321; melting pt: 1545°C; boiling pt: 1950°C
ceriuma malleable ductile steel-grey element of the lanthanide series of metals, used in lighter flints and as a reducing agent in metallurgy. Symbol: Ce; atomic no: 58; atomic wt: 140.115; valency: 3 or 4; relative density: 6.770; melting pt: 798°C; boiling pt: 3443°C
osmiuma very hard brittle bluish-white metal occurring with platinum and alloyed with iridium in osmiridium: used to produce platinum alloys, mainly for pen tips and instrument pivots, as a catalyst, and in electric-light filaments. Symbol: Os; atomic no: 76; atomic wt: 190.2; valency: 0 to 8; relative density: 22.57; melting pt: 3033±30°C; boiling pt: 5012±100°C