REALIZA TODAS LAS REACCIONES QUE SE LLEVAN A CABO PARA FORMAR LAS SIGUIENTES SALES: (No olvide los nombres) 1. DICROMATO COBALTOSO 2. SULFURO DE PLATINO(IV) 3. TELURITO DE AMONIO 4. NITRATO DE PLATA 5. YODURO DE NIOBIO (III) 6. HIPOYODITO MERCURIOSO

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.