Boron has only two naturally occurring stable isotopes, boron-10 and boron-11. The average atomic mass of boron is 10.81 amu. Which of borons two isotopes is more common?

Answer: Boron 11

Boron 11 is the most common isotope of boron, it represents 80% of boron found on the earth surface, it is a stable isotope metal, it occurs naturally and can also be synthesised by fission process.

Boron 11 has 5 protons and 6 neutrons.

•Uses.

Boron 11 is used in the nuclear industry.

•It is also used as neutron reflector.

•It is used in thin film applications as granules, rods, pellets, etc.