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Question Question 7(i)
A nucleus 11Na24 emits a β-particle to change into magnesium (Mg).
(a) Write the symbolic equation for the process.
(b) What are numbers 24 and 11 called?
(c) What is the general name of 1224Mg with respect to 1124Na
(a) 11Na24 ⟶ 12Mg24 + -1β0
(b) 24 is the mass number (i.e., sum of neutrons and protons) and 11 is the atomic number (i.e., number of electrons).
(c) Isobars