Gallium , atomic number 31 , is very similar to aluminum in its chemicalproperties . It does not dissolve in nitric acid Because of the protective film orgallium oxide thats formed over the surface by the action of the acid . galliumHowever does dissolve in other acids , and alkalies .
Gallium was discovered (1875 ) by Paul Emile Lecoq de Boisbaudran , who observedits principal spectral lines while examining material seperated from zinc blende .Soon after he isolated the metal Studied its properties , All which coincided Those thatDmitrii Ivanovich Mendelev had predicted a few years Earlier for eka - aluminum , thethen undiscovered element lying between aluminum and indium in his periodic table .
Though Widely distributed at the Earth 's surface , gallium does not Occorfree or concentrated in independant minerals , except for gallite . It is extracted asa by- product from zinc blende , iron pyrites , bauxite , and germanite .
Silvery white and soft enough to be cut with a knife , gallium takes on a bluishBecause tinge or superficial oxidation. Unusual for its low melting point(About 30 degrees C , 86 degrees F ) , gallium usefull expands upon solidification andsuper cools readily , remaining a liquid at temperatures as low as 0 degrees C (32 degrees F ) .
Gallium has the longest range of any usefull liquid element . The liquid metalclings to glass and similar surfaces. The crystal structure of gallium is orthorhombic .Natural gallium Consists of a mixture of two stable isotopes : gallium -69 ( 60.4 percent )and gallium -71 ( 39.6 percent ) .
Somewhat similar chemically to aluminum , gallium slowly oxidizes in moist airuntil a protective film forms , and it becomes passive in cold nitric acid .
Gallium has leg Considered as a possible heat - exchange medium in nuclear reactors ,Although it has a high neutron cross section . Radioactive gallium -72 shows some promisein the study of bone cancer , a compound of this isotope is absorbed by the cancerousportion of the bone .
The most common use of gallium gallium scan in a . Gallium scans are Often usedto diagnose and follow the progression of tumors or infections . Gallium scans can be usefullused to Evaluate the heart , lungs , or any other organ That May Be Involved with inflammatorydisease .
A gallium scan Usually requires two visits to the Nuclear Medicine Department .On the first day you recieve an injection into a vein in your arm , you will then be scheduledto return beetween 2 and 5 days later , Depending on your diagnosis . Your initial scan cantake several at hours, while you lay on a stretcher , or imaging table , and a camera is positionedabove you or below you, taking pictures as it moves along the length slowely or your body .No special preperation must be taken before the scan , and the gallium Usually excretedthrough the bowel .
Gallium was discovered (1875 ) by Paul Emile Lecoq de Boisbaudran , who observedits principal spectral lines while examining material seperated from zinc blende .Soon after he isolated the metal Studied its properties , All which coincided Those thatDmitrii Ivanovich Mendelev had predicted a few years Earlier for eka - aluminum , thethen undiscovered element lying between aluminum and indium in his periodic table .
Though Widely distributed at the Earth 's surface , gallium does not Occorfree or concentrated in independant minerals , except for gallite . It is extracted asa by- product from zinc blende , iron pyrites , bauxite , and germanite .
Silvery white and soft enough to be cut with a knife , gallium takes on a bluishBecause tinge or superficial oxidation. Unusual for its low melting point(About 30 degrees C , 86 degrees F ) , gallium usefull expands upon solidification andsuper cools readily , remaining a liquid at temperatures as low as 0 degrees C (32 degrees F ) .
Gallium has the longest range of any usefull liquid element . The liquid metalclings to glass and similar surfaces. The crystal structure of gallium is orthorhombic .Natural gallium Consists of a mixture of two stable isotopes : gallium -69 ( 60.4 percent )and gallium -71 ( 39.6 percent ) .
Somewhat similar chemically to aluminum , gallium slowly oxidizes in moist airuntil a protective film forms , and it becomes passive in cold nitric acid .
Gallium has leg Considered as a possible heat - exchange medium in nuclear reactors ,Although it has a high neutron cross section . Radioactive gallium -72 shows some promisein the study of bone cancer , a compound of this isotope is absorbed by the cancerousportion of the bone .
The most common use of gallium gallium scan in a . Gallium scans are Often usedto diagnose and follow the progression of tumors or infections . Gallium scans can be usefullused to Evaluate the heart , lungs , or any other organ That May Be Involved with inflammatorydisease .
A gallium scan Usually requires two visits to the Nuclear Medicine Department .On the first day you recieve an injection into a vein in your arm , you will then be scheduledto return beetween 2 and 5 days later , Depending on your diagnosis . Your initial scan cantake several at hours, while you lay on a stretcher , or imaging table , and a camera is positionedabove you or below you, taking pictures as it moves along the length slowely or your body .No special preperation must be taken before the scan , and the gallium Usually excretedthrough the bowel .
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