Assertion: group metal | /r/HasProperty | rb
Facets:
Source sentences:
text: In Mendeleev's periodic table the Group 1 metals (Li, Na, K, Rb) and Group 2 metals (Be, Mg, Ca, Sr) are all in place in columns 1 and 2, three of group 3 (B, Al, In), three of group 4 (C, Si, Sn) in place, 4 of group 5 (N, P, As, Sb), 4 of group 6 (O, S, Se, Te), 4 of group 7 (F, Cl, Br, I), but his group 8 (where group 0 Noble Gases are) are metals from the first and second transition metals series.