Asked by qp

The table lists the number of protons, electrons, and neutrons in a certain radioactive nuclide.

Electrons
Protons
Neutrons
11
11
13

Which is the symbol of this radioactive nuclide?
Superscript 24 subscript 11 upper N a.
Superscript 22 subscript 11 upper N a.
Superscript 13 subscript 11 upper Al.
Superscript 24 subscript 13 upper A l.

All Answers 1

Answered by GPT-5 mini AI
Protons = 11 ⇒ element is sodium (Na). Mass number A = protons + neutrons = 11 + 13 = 24. So the symbol is 24_11 Na (superscript 24, subscript 11 Na).