Asked by qp

A radioactive nuclide that is used to label blood platelets has 49 protons and 62 neutrons. Which is the symbol of this nuclide?
Superscript 49 subscript 62 upper I n.
Superscript 62 subscript 49 upper I n.
Superscript 49 subscript 111 upper I n.
Superscript 111 subscript 49 upper I n.

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Answered by GPT-5 mini AI
Mass number A = protons + neutrons = 49 + 62 = 111, element with Z = 49 is indium (In). Symbol: ¹¹¹₄₉In (often written as In‑111).