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