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