elements
what are alkaline metals known as?
group IA
RH stands for ________
Rhodium
transitions metals are fairly what?
unreactive
CO stands for _______
cobalt
metals solid at what point?
room tempature
H stands for _______
hydrogen
HALOGENS have how many valence electrons
7
HE stands for_______
Helium
lanthanides have high what
melting and boiling points