Questions with the keyword 'periodic'

• What is Lutetium, Boron, Argon, Erbium and Astatine? by sportychick101 to Darren, Krystal, Lee, Upulie . Comments: (so far, 3 comments)
• what is your favourite periodic element? by dills and 2 others. to Lee, Upulie, Darren, Krystal . Comments: (No comments so far)
• How many eliments do you know with out looking at the table of eliments. I know 10? by luke to Darren, Krystal, Lee, Tara, Upulie . Comments: (No comments so far)