નવું પાનું : '''Rhenium''' ({{IPAc-en|pron|ˈ|r|iː|n|i|ə|m}} {{respell|REE|nee-əm}}) is a chemical element with the symbol '''Re''' and atomic number 75. It is a silv...
'''Rheniumરિનીયમ''' ({{IPAc-en|pron|ˈ|r|iː|n|i|ə|m}}એ {{respell|REE|nee-əm}}) is aએક [[chemicalરાસાયણિક elementતત્વ]] withtheછે symbolજેની સંજ્ઞા '''Re''' andઅને [[atomicઅણુ numberક્રમાંક]] 75૭૫ છે. It is a silvery-white, heavy, third-row [[transition metal]] in [[group 7 element|group 7]] of the [[periodic table]]. With an average concentration of 1 [[Parts-per notation|part per billion]] (ppb), rhenium is one of the rarest elements in the [[Earth's crust]]. The free element has the [[List of elements by melting point|third-highest]] [[melting point]] and highest boiling point of any element. Rhenium resembles [[manganese]] chemically and is obtained as a [[by-product]] of [[molybdenum]] and [[copper]] refinement. Rhenium shows in its compounds a wide variety of [[oxidation state]]s ranging from −1 to +7.
Discovered in 1925, rhenium was the last [[stable element]] to be discovered. It was named after the river [[Rhine]] in Europe.
