Question #221013
The isotopes of magnesium, 24Mg and 25Mg, both form ions with charge 2+. Which of
12 12
the following statements about these ions is true?
A Both ions have electronic configuration 1s2 2s2 2p6 3s2
B 25Mg2+ has more protons than 24Mg2+. 12 12
C The ions have the same number of electrons but different numbers of neutrons.
D The ions have the same number of neutrons but different numbers of protons.
Expert's answer
D. The ions have the same number of neutrons but different numbers of protons.
