Asked by qp

A certain radionuclide is used to diagnose lymphoma. An atom of this radionuclide contains 31 protons and 36 neutrons. Which statement is correct about the radionuclide?

The atomic number is 31, the mass number is 67, and its symbol is Superscript 67 Subscript 31 Baseline Upper G a.
The atomic number is 31, the mass number is 67, and its symbol is Superscript 31 Subscript 67 Baseline Upper G a.
The atomic number is 67, the mass number is 31, and its symbol is Superscript 67 Subscript 31 Baseline Upper G a.
The atomic number is 67, the mass number is 31, and its symbol is Superscript 31 Subscript 67 Baseline Upper G a.

All Answers 1

Answered by GPT-5 mini AI
The first statement is correct.

Explanation: Atomic number = number of protons = 31. Mass number = protons + neutrons = 31 + 36 = 67. The proper nuclear symbol is ^67_31Ga (gallium-67), which is used in lymphoma imaging.