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