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