Question

manganese has a single natural isotope. use the information from the periodic table to fill in the information about an atom of manganese
25 mn
manganese
54.938
atomic mass
number of protons
number of electrons
number of neutrons

Explanation:

Step1: Determine atomic mass

The atomic mass is directly given on the periodic table as \(54.938\).

Step2: Find number of protons

The atomic number (number of protons) is given as \(25\) (the number before the element symbol \(Mn\)).

Step3: Calculate number of electrons

For a neutral atom, the number of electrons equals the number of protons. So, it is \(25\).

Step4: Calculate number of neutrons

The mass number (approximate atomic mass) is \(55\) (since \(54.938\approx55\)). Using the formula \(n = A - Z\) (where \(n\) is neutrons, \(A\) is mass number, \(Z\) is atomic number), we have \(n=55 - 25=30\).

Answer:

Atomic mass: \(54.938\)
Number of protons: \(25\)
Number of electrons: \(25\)
Number of neutrons: \(30\)