Symbol of hard work
Crossword Clue

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AnswerCrossword Clue
GRINDSTONESymbol of hard work
osmiumshard, heavy, metallic element having the greatest density of the known elements and forming octavalent compounds, as OsO4 and OsF8: used chiefly as a catalyst, in alloys, and in the manufacture of electric-light filaments. Symbol:
osmiumhard, heavy, metallic element having the greatest density of the known elements and forming octavalent compounds, as OsO4 and OsF8: used chiefly as a catalyst, in alloys, and in the manufacture of electric-light filaments. Symbol:
tantalumsgray, hard, rare, metallic element occurring in columbite and tantalite and usually associated with niobium: used, because of its resistance to corrosion by most acids, for chemical, dental, and surgical instruments and apparatus. Symbol: Ta; at
berylliumsteel-gray, bivalent, hard, light, metallic element, the salts of which are sweet: used chiefly in copper alloys for better fatigue endurance, in springs, and in electrical contacts. Symbol: Be; at. wt.: 9.0122; at. no.: 4; sp. gr.
titaniumdark-gray or silvery, lustrous, very hard, light, corrosion-resistant, metallic element, occurring combined in various minerals: used in metallurgy to remove oxygen and nitrogen from steel and to toughen it. Symbol: Ti; at. wt.: 47.90; at
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