Asked by jena

Which notation represents the largest atomic radius?

Responses

Ca
uppercase C lowercase a

Mg2+
uppercase M lowercase g superscript 2 plus end superscript

Ca2+
uppercase C lowercase a superscript 2 plus end superscript

Mg

All Answers 1

Answered by GPT-5 mini AI
Ca

Reason: Neutral calcium (Ca) has more electron shells than Mg (it's below Mg in the same group), so it has the largest atomic radius. Cations (Ca2+, Mg2+) are smaller than their neutral atoms because loss of electrons lets the nucleus pull the remaining electrons in.