Question

One of the most widely used isotopes in medical diagnostics is technetium-99m (the m indicates that it is a metastable isotope). Write the symbol for this isotope, indicating both mass number and atomic number. Express your answer as an isotope.

Answer 1

Atomic number of Technetium is 43, Mass number is 99  and symbol is Tc ,hence symbol of isotope is  99 m43 Tc

General representation of atom is AZ X

Where ,  A is mass number , Z is atomic number and X is symbol of element. Atomic number of Technetium is 43, Mass number is 99  and symbol is Tc ,hence symbol of isotope is  99 m43 Tc ,Where m stands for meta stable.

A chemical element with the atomic number 43 and the symbol Tc is known as technetium. It is the lightest element whose radioactive isotopes are all present. Technetium is a synthetic element that is created in abundance. The most prevalent source of naturally occurring technetium is uranium and thorium ores, where it spontaneously fissions as a byproduct, while molybdenum ores produce it as a byproduct of neutron capture. This crystalline, silvery-gray transition metal in group 7 of the periodic table is sandwiched between rhenium and manganese, and its chemical characteristics fall somewhere in the middle of the two nearby elements. Only in traces, 99Tc is the most prevalent naturally occurring isotope.

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