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
⁴⁸₂₂Ti³⁺

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
³²₁₆S²⁻

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Date of last modification: 2021