A. Determines the number of electrons and protons in each of the following common ions: Na+, Ca2+,Al3+, I-, F-, Br-,Mn2+, C4-, Cu2+, S2-,N3-, K+, Mg2+,Fe3+.
B. The atomic masses of 6Li and 7Li are 6.0151 amu and 7.0160 amu, respectively. Determines natural abundances of two isotopes. Where the average atomic mass of Li is given 6.941 amu.