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