Is boron a stable element?
boron can be stable maybe if it is in the room temperature
Why Boron hydroxide is acidic whereas Aluminium hydroxide is amphoteric and Thallium hydroxide is basic?
Boron-6: ? Boron-7: ? - 1.4 MeV Boron-8: 770 ms Boron-9: ? - 0.54 KeV Boron-10: stable Boron-11: stable Boron-12: 20.2 ms Boron-13: 17.33 ms Boron-14: 12.5 ms Boron-15: 9.93 ms Boron-16: <190 ps Boron-17: 5.08 ms Boron-18: <26 ns Boron-19: 2.92 ms Boron-20: ? Boron-21: ? Source: NNDC, Brookhaven National Laboratories, see Related Link below for details. (Click on each nuclide to scroll and recenter.)
Compounds of boron have been around since ancient times, Egyptian mummification could not have been accomplished without it. Boron is not a naturally free element. The element was not isolated until 1808 and it was not identified as the element boron until 1824. See the related link for more information on this subject.