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Give origin of group 13 elements |
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Answer» Solution :Boron is a typical non-metal Aluminium is a metal but shows MANY chemical similarities to boron.While gallium , indium ,thallium and nihonium are almost exclusivelymetallic in character. Boron is a fairly rare element , it mainly occurs as orthoboric acid `(H_3BO_3)`, borax `(Na_2B_4O_7. 10H_2O)` and kernite `(Na_2B_4O_7 . 4H_2O)`. In India borax occurs in Puga valley (Ladakh) andSambhar Lake (Rajasthan) .The abundance of boron in earth crust is less than0.0001% by mass. There are two ISOTOPIC forms of boron `.^10B` (19%) and `.^11B` (81%) Aluminium is the most abundant metal and the THIRD most abundant element in the earth.s crust (8.3% by mass) after oxygen (45,5%) and Si (27.7%) Bauxite `(Al_2O_3 . 2H_2O)` and cryolite `(Na_3AlF_6)` are the important minerals of aluminium.In India it is found as MICA in Madhya Pradesh, Karnataka , Orissa and Jammu. Gallium , indium and thallium are less abundant elements in nature . |
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