Answer:
Protons = Electrons = 43
Neutrons = 54
Explanation:
Technetium is transition metal and belongs to the 5d-series in the periodic table. Tc- 97 has an atomic number Z = 43 and Atomic mass A = 97
For a neutral atom:
Atomic number = number of protons = number of electrons
Atomic mass = number of protons + neutrons
For Tc-97:
Z = 43, therefore
Protons = 43
Electrons = 43
A = 97
i.e. 97 = 43 - neutrons
# neutrons = 97 - 43 = 54
