An atom of the isotope 1224Mg{}^{24}_{12}\text{Mg}1224Mg is ionized by losing three electrons to form a 1224Mg3+{}^{24}_{12}\text{Mg}^{3+}1224Mg3+ ion.
What is the specific charge of this magnesium ion?
(Take the mass of a nucleon to be 1.67 × 10-27 kg and the charge of an electron to be 1.60 × 10-19 C. Neglect the mass of the electrons in your calculation.)
4.80×107 C kg−14.80 \times 10^7\text{ C kg}^{-1}4.80×107 C kg−1
1.20×107 C kg−11.20 \times 10^7\text{ C kg}^{-1}1.20×107 C kg−1
2.40×107 C kg−12.40 \times 10^7\text{ C kg}^{-1}2.40×107 C kg−1
3.60×107 C kg−13.60 \times 10^7\text{ C kg}^{-1}3.60×107 C kg−1
77 exam-style questions on OCR GCSE Chemistry Atomic structure. Each one has a worked solution and a mark scheme showing where the marks go.