Return a list with at least 2 entities with ElementData?

Questions
1

Hello

Using the same code structure as

PlanetData[ EntityClass["Planet", "OuterPlanet"], {"Name", "MoonCount"}]`

which works quite well (a list with the values of 2 properties is returned), I would like to make it work with

ElementData[EntityClass["Element", "Radioactive"], {"Name", "HalfLife"}]'

I get an error message although these properties are known.

To bypass it I have to use a much longer code:

l1 = ElementData[EntityClass["Element", "Radioactive"], "Name"];
l2 = ElementData[EntityClass["Element", "Radioactive"], "HalfLife"];
Thread[Join[{l1, l2}]]

Why the much shorter code above does not work?

Thanks

2

Thank you for letting us know about this.

Some functions have undocumented features. In this case, it looks to me like Planet data has an undocumented feature that allows it to take multiple queries. I’ve forwarded a note to the developers about this, so they can consider supporting this kind of query across another functions like ElementData.

3

Thanks. It would be nice in future releases to query data from all the functions like ElementData with the same structure of code.