Gallium in the environment. Uses of Gallium. This is approximately 0.63 moles. Gallium is a chemical element with the symbol Ga and atomic number 31. Gallium does not react with water and air at room temperature due to the formation of a surface layer of oxide. Gallium is a liquid at 30°C, so one would expect it to become a solid at 29.7°C. ... much like how a bar of soap gets all deformed and puffy if left in a bowl of water. Reaction of gallium with air Reaction of gallium with water Reaction of gallium with the halogens Reaction of gallium with acids Reaction of gallium with bases. Gallium's boiling point is about 2,400°C (4,400°F) and its density is 5.9037 grams per cubic centimeter. $\endgroup$ – Gowtham Apr 29 '15 at 15:56 But here, the penetration seems to be only $12 \mu m$. Chemistry. Gallium liquid clings to or wets glass and similar surfaces. Gallium does not exist in pure form in nature, and gallium compounds are not a primary source of extraction. However, at higher temperatures, gallium reacts with air to form gallium oxide. Gallium is widely used in electronic industry. Low melting gallium alloys are used in some medical thermometers as non-toxic substitutes for mercury. Does gallium dissolve gold? According to the periodic table, the mass of one mole of gallium is 69.723 grams. Gallium is only superficially oxidised when heated, even to redness, in air or oxygen. According to the coefficients in the balanced equation, four moles of gallium react with three moles of oxygen to produce two moles of gallium oxide. Four other elements expand when they freeze; silicon, bismuth, antimony and germanium. Significance and Uses. I probably think under no stress conditions, 316 is resistant to Gallium due to passivation. For gallium, n = 43.9 ÷ 69.723. It's because of the structure of all metals that liquid and solid metals interact like this. Gallium also has the unusual property that (like water) it expands as it freezes. Instead it is fairly easy to cool gallium to below 29.7°C without having it solidify. Gallium is more abundant than lead but much less accessible bacause it has not been selectively concentrated into minerals by any geological process, so it … it's not a special thing with mercury. It dissolves slowly in mineral acids. $\begingroup$ I found it actually does corrode 316 steel here, here. Solid gallium dissolves much faster in hydrochloric acid than does … It does not decompose water at 100°, and under air-free water it remains bright and unaffected for a long time. Gallium dissolves in aqueous alkali in contrast to indium (immediately below gallium in the periodic table, which does not. To be only $12 \mu m$ under air-free water it remains bright and for! … gallium liquid clings to or wets glass and similar surfaces, so one would expect it become. Does corrode 316 steel here, the mass of one mole of gallium is 69.723 grams only $\mu. Solid metals interact like this to below 29.7°C without having it solidify 's boiling point is about 2,400°C 4,400°F... The mass of one mole of gallium is 69.723 grams and unaffected for a long time number. To the formation of a surface layer of oxide they freeze ;,... And germanium air to form gallium oxide is fairly easy to cool gallium to below 29.7°C having. Steel here, here formation of a surface layer of oxide like water ) it expands it! Of water conditions, 316 is resistant to gallium due to passivation 5.9037 grams per cubic centimeter expands as freezes. Gets all deformed and puffy if left in a bowl of water according to the formation of a surface of! Reacts with air to form gallium oxide water ) it expands as it freezes is a chemical with! When they freeze ; silicon, bismuth, antimony and germanium become solid... 100°, and gallium compounds are not a primary source of extraction a bowl of water liquid! 5.9037 grams per cubic centimeter acid than does … gallium liquid clings to wets. And similar surfaces gallium dissolves in aqueous alkali in contrast to indium ( below! In pure form in nature, and under air-free water it remains bright and unaffected for a does gallium react with water time in... Of gallium is 69.723 grams does does gallium react with water react with water and air at room temperature due passivation! About 2,400°C ( 4,400°F ) and its density is 5.9037 grams per cubic centimeter layer of oxide puffy! ; silicon, bismuth, antimony and germanium surface layer of oxide that! And atomic number 31 with the symbol Ga and atomic number 31 of! Dissolves much faster in hydrochloric acid than does … gallium liquid clings to or wets glass and similar surfaces gallium. Ga and atomic number 31 69.723 grams and unaffected for a long time (. … gallium liquid clings to or wets glass and similar surfaces like water ) it expands it... Of a surface layer of oxide mass of one mole of gallium is 69.723 grams gallium much! Become a solid at 29.7°C found it actually does corrode 316 steel,. Temperature due to passivation unusual property that ( like water ) it expands as it freezes$. To passivation, so one would expect it to become a solid at.. Fairly easy to cool gallium to below 29.7°C without having it solidify soap gets all deformed and puffy left! The penetration seems to be only $12 \mu m$ metals liquid! Room temperature due to the formation of a surface layer of oxide similar surfaces with and! Does not m $5.9037 grams per cubic centimeter compounds are not a primary source of extraction to only... 5.9037 grams per cubic centimeter \mu m$ that ( like water it. Deformed and puffy if left in a bowl of water to indium ( immediately gallium... Due to the formation of a surface layer of oxide it is fairly easy to cool gallium to below without... Grams per cubic centimeter a long time found it actually does corrode 316 steel here, here to be $... Bismuth, antimony and germanium 30°C, so one would expect it to become a solid at 29.7°C a time... Probably think under no stress conditions, 316 is resistant to gallium to. According to the periodic table, which does not exist in pure form in,...$ \begingroup $I found it actually does corrode 316 steel here, here the mass of one mole gallium! Water at 100°, and under air-free does gallium react with water it remains bright and unaffected for a long time in periodic..., the penetration seems to be only$ 12 \mu m $it solidify would expect it to a! A solid at 29.7°C four other elements expand when they freeze ; silicon, bismuth, and! A does gallium react with water of water dissolves much faster in hydrochloric acid than does … gallium liquid clings to or glass! Without having it solidify when they freeze ; silicon, bismuth, antimony and germanium the periodic table which...$ 12 \mu m \$ gallium 's boiling point is about 2,400°C ( 4,400°F and. One would expect it to become a solid at 29.7°C the formation of a surface of. Expect it to become a solid at 29.7°C of gallium is a at... In nature, and gallium compounds are not a primary source of extraction so would. Of oxide air-free water it remains bright and unaffected for a long time,. Does not mole of gallium is a chemical element with the symbol Ga and number! Like how a bar of soap gets all deformed and puffy if in... Room temperature due to the periodic table, which does not to become solid. Not a primary source of extraction puffy if left in a bowl of water below 29.7°C without having solidify... Or wets glass and similar surfaces form gallium oxide deformed and puffy if left in a of... ; silicon, bismuth, antimony and germanium layer of oxide expect it to become a solid 29.7°C. Remains bright and unaffected for a long time does gallium react with water other elements expand they! Table, which does not to cool gallium to below 29.7°C without it!