Help me answer this question Why is the answer Z and not Argon?

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1 Answer
Truong-Son N.
Mar 3, 2018

Because someone was being cheeky and wanted you to say Z. That's still ""_(18)^(38) "Ar", the argon-38 isotope (0.063% abundant), with 18 protons (clearly nothing but argon), and 20 neutrons to give a mass number of 38.

In reality, that IS ""_(18)^(38) "Ar".

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