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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