Complete the product side of the following net ionic redox equations. Consult the attached activity series table. Make sure the equations are balanced. Indicate states. Write “no reaction” or “N. R.” if the reaction does
not occur.
Ca (s) + Ni2+ (aq)-
Pt (s) + 2 H(aq) -
H2(g) + Cu2+ (aq)-
2 Ag (s) + Pb2+ (aq)-

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

Which of the following observations indicates that an atom has neutrons? some uncharged particles are scattered by a beryllium atom when it hits a gold foil. some uncharged particles bounce back from a gold foil when it is bombarded with alpha particles. a radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms. a radiation which attracts electrons is produced when a beryllium atom is bombarded with alpha particles.