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