Exercise on Chemical Symbol and Atomic Mass: Solutions
What is the chemical symbol and atomic mass of the following:
1) An ion 26 electrons, and 19 protons, 22 with neutrons
Solution:
22 protons indicate an atomic number 22 (Ti)
The charge on this ion = 22 − 19 = + 3
48
22
Ti3+
2) An ion of Sulfur with 16 neutrons and 18 electrons
Solution:
S (according to the periodic table) has an atomic number 16 (= # protons).
Mass number of S ion = 16 + 16 = 32
Charge on the ion = 16 − 18 = −2
32
16
S2−
For more details, please contact me here.