Қуаныш Ағай Inst: @mezhdunamihimia Atomic structure. Isotopes. ATOM NUCLEUS – ядро 1-task: Find the p,n,e numbers of given atoms Isotopes – same atomic number, different atomic mass Isobars – same atomic mass, different atomic number Isotons – same neutron numbers, different atomic number 2-task: find the isotopes, isobars and isotons Қуаныш Ағай 14 C6 , 30 U92, O8 – are 31 C6 ,13C6 235 16 N7 , Si14 , 12 Inst: @mezhdunamihimia 15 P15 , , 32 S16 – are 14 C6 – are 235 Np93, 235 Pu94 – are 3-task: calculate the related atomic mass of isotopes 1. Isotopes of carbon in nature: C 12 – 98.892% (12 * 98.892%/100%) + (13 * 1.108/100%) = (12 * 0.98892) + (13 * 0.01108) = C 13 – 1.108% = 11.86704 + 0.14404 = 12.01108 g/mole 2. In nature, lithium occurs in the form of such isotopes: Li 7 – 92.7% Li 6 – 7.3% 3. Chlorine isotopes according to distribution in nature: Cl 37 – 24.47% Cl 35 – 75.53% 4. Natural magnesium isotopes: 24Mg, 25Mg, 26Mg. Calculate the average atomic mass of natural magnesium if the atomic percentages of the individual isotopes are 78.6%, 10.1%, and 11.3%, respectively. 5. Calculate the average atomic mass of gallium if, 69Ga 64%, 71Ga – 36%