Sorry for the FAQ, but I really don't know where to find a full spreadsheet for element properties. I mean a table that has one row for each element, and the columns are its properties, such as name, atomic number, density, melting point, etc. I know that there are many sites or references for that, but I need it in tabular format, because I want to analyze data, make charts, etc.
Well, here's a CSV file that I parsed out of the JSON data provided by Paul Nathan's website, which in turn was produced from gPeriodic data in response to this question. gPeriodic is FOSS, so I can only assume that the element data contained within is good to share, though I have no idea of its provenance.
The parser uses the python json module to read the data, which I then wrote into comma separated values, which should be readable by any halfway competent spreadsheet program.
Here it is: Pastebin Link
save it as elementdata.csv and you're good to go.
Tried plotting Z versus covalent radius in R from this data - looks alright:
Some of the data points are missing, some are not read by R because they are wrapped in <> - pre-process to your heart's content.
Fine, here's my data taken from the reference mentioned in my above comment.
I cannot vouch for it's accuracy.