A) directional B) electron C) transfer D) proton E) transiton
A) tin B) lead C) mercury D) boron E) gold
A) halogens B) alkali metals C) actinides D) the boron family E) the hydrogen group
A) iron triad B) halogens C) noble gases D) rare earths E) common earths
A) zinc B) platinum C) cobalt D) tin E) lead
A) lanthanides B) halogens C) the boron family D) actinides E) noble gases
A) group 2 B) group 15 C) group 14 D) group 1 E) group 16
A) He B) Hf C) h D) Hg E) H
A) helium B) chlorine C) iodine D) sugars E) salts
A) They glow in the dark. B) They never rust. C) They have magnetic properties. D) They are liquid metals. E) They are worth more money.
A) periods B) triads C) metaloids D) groups E) families |