Question

1. a magnesium - 26 atom is an isotope of magnesium (mg) with a mass number of 26. select the subatomic composition of a magnesium - 26 atom. refer to a periodic table. 12 protons, 14 neutrons, 12 electrons 14 protons, 12 neutrons, 14 electrons 12 protons, 12 neutrons, 14 electrons 14 protons, 14 neutrons, 12 electrons

Explanation:

Step1: Determine the number of protons

From the periodic table, magnesium (Mg) has an atomic number of 12. The atomic number is equal to the number of protons. So, the number of protons \(p = 12\).

Step2: Calculate the number of neutrons

The mass number \(A=26\). Using the formula \(A=p + n\) (where \(n\) is the number of neutrons), we can solve for \(n\). Rearranging the formula gives \(n=A - p\). Substituting \(A = 26\) and \(p = 12\), we get \(n=26-12=14\).

Step3: Determine the number of electrons

For a neutral atom, the number of electrons \(e\) is equal to the number of protons. Since \(p = 12\), then \(e = 12\).

Answer:

12 protons, 14 neutrons, 12 electrons.