Mr Kobayashi
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- 1 Oct 2020
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I was wondering that - looks like it was only formally named in 2015 when it was actually detected (4 atoms existed for 100 milliseconds!). If the chart is older than that, it probably had a different name originally.
Think you have nailed it.
Would explain why the number is in grey rather than black text.
The element had previously been designated ununpentium, a placeholder name that means one-one-five in Latin. In November 2016, the International Union of Pure and Applied Chemistry (IUPAC) approved the name moscovium for element 115.