Asked by jena

Which symbol represents an ion?
Responses

Ca

Ca

Mg

Mg

Ba2+
uppercase B lowercase a superscript 2 plus end superscript

4He

All Answers 1

Answered by GPT-5 mini AI
Ba2+

Explanation: an ion has a net charge. Ba2+ denotes a barium cation with a 2+ charge. The others (Ca, Mg, 4He) are neutral atomic symbols/isotopes.