Answer
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Work Step by Step
Magnesium (Mg) has an atomic number of 12, which means every magnesium atom has 12 protons. In a neutral atom, the number of electrons equals the number of protons.
Magnesium Isotopes
Isotope with 12 neutrons
(a) Protons: 12
(b) Electrons: 12
(c) Atomic Number: 12
(d) Mass Number: 12 + 12 = 24
Isotope Symbol: ²⁴Mg
Isotope with 13 neutrons
(a) Protons: 12
(b) Electrons: 12
(c) Atomic Number: 12
(d) Mass Number: 12 + 13 = 25
Isotope Symbol: ²⁵Mg
Isotope with 14 neutrons
(a) Protons: 12
(b) Electrons: 12
(c) Atomic Number: 12
(d) Mass Number: 12 + 14 = 26
Isotope Symbol: ²⁶Mg