Chemistry · Atomic Structure

Identify the pair from the following options which is both isoelectronic and isotopic.

Verified Solution4 OptionsUpdated: October 2026👁️1 View

140Ca2+ and 40Ar
239K+ and 40K+✓
356Fe3+ and 57Fe2+
423Na and 24Na+

Correct answer

39K+ and 40K+

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Identify the pair from the following options which is both isoelectronic and isotopic.

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Identify the pair from the following options which is both isoelectronic and isotopic.

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