The atomic mass of born is10.81 amu. Boron obtained from the borax deposits in Death Valley consists of 2 isotopes. They are boron-10, boron-11 with atomic masses of10.013 amu and 11.009 amu, respectively. Explain which isotope of boron is more abundant boron-10 orboron-11
1. boron-10
2. Cannot be determined from data given
3. boron-11
4. neither, their abundances are the same