atomic See also:

• WEIGHT

weight 159.2 See also:

• atomic weight 159.2 TERBIUM [symbol Tb (0=16)]

TERBIUM [See also:

• SYMBOL (Gr. o-uµ(3oXov, a sign)

symbol Tb (0=16)]  , a metallic chemical See also:

• ELEMENT (Lat. elementum)

element belonging to the rare See also:

• EARTH
• EARTH (a word common to Teutonic languages, cf. Ger. Erde, Dutch aarde, Swed. and Dan. jord; outside Teutonic it appears only in the Gr. 'pq'e, on the ground; it has been connected by some etymologists with the Aryan root ar-, to plough, which is seen in
• EARTH, FIGURE OF
• EARTH, FIGURE OF THE

earth See also:

• GROUP

group; it was originally called erbia by its discoverer Mosander (see RARE EARTH) . Pure See also:

• TERBIUM [symbol Tb, atomic weight 159.2 (0=16)]

terbium compounds were obtained by G . Urbain (Compt. rend., 1904 seq.) by fractional See also:

• CRYSTALLIZATION

crystallization of the See also:

• NICKEL
• NICKEL (symbol Ni, atomic weight 58.68 (0=16))

nickel See also:

• DOUBLE
• DOUBLE (from the Mid. Eng. duble, the form which gives the present pronunciation, through the Old Er. duble, from Lat. duplus, twice as much)

double nitrates, the See also:

• ETHYL

ethyl sulphates, and the See also:

• BISMUTH

bismuth double nitrates of the terbium earths . Terbium appears to be trivalent . The See also:

• OXIDE

oxide is a See also:

• BLACK
• BLACK, ADAM (1784-1874)
• BLACK, JEREMIAH SULLIVAN (1810–1883)
• BLACK, WILLIAM (1841-1898)

black or See also:

• BROWN
• BROWN, CHARLES BROCKDEN (1771-181o)
• BROWN, FORD MADOX (1821-1893)
• BROWN, FRANCIS (1849- )
• BROWN, GEORGE (1818-188o)
• BROWN, HENRY KIRKE (1814-1886)
• BROWN, JACOB (1775–1828)
• BROWN, JOHN (1715–1766)
• BROWN, JOHN (1722-1787)
• BROWN, JOHN (1735–1788)
• BROWN, JOHN (1784–1858)
• BROWN, JOHN (1800-1859)
• BROWN, JOHN (1810—1882)
• BROWN, JOHN GEORGE (1831— )
• BROWN, ROBERT (1773-1858)
• BROWN, SAMUEL MORISON (1817—1856)
• BROWN, SIR GEORGE (1790-1865)
• BROWN, SIR JOHN (1816-1896)
• BROWN, SIR WILLIAM, BART
• BROWN, THOMAS (1663-1704)
• BROWN, THOMAS (1778-1820)
• BROWN, THOMAS EDWARD (1830-1897)
• BROWN, WILLIAM LAURENCE (1755–1830)

brown See also:

• POWDER (through O. Fr. puldre, modern poudre, from Lat. pulvis, pulveris, dust)

powder according as it is prepared from the exalate or sulphate, and when pure it is non-fluorescent, but mixed with gadolinia or alumina it possesses this See also:

• PROPERTY

property . It yields colourless salts; the crystallized sulphate has the See also:

• FORMULA
• FORMULA (Lat. diminutive of forma, shape, pattern, &c., especially used of rules of judicial procedure)

formula Tb2(SO4),.8H2O .