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