Which reaction will occur?
O 2NaBr + 12 → 2Nal + Br2
O 2Fe + Al2O3 → 2A + Fe203
2AgNO3 + Ní → Ni(NO3)2 + 2Ag
O Pb + Zn(C2H302)2 → Zn + Pb(C2H302)2

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

what is the question here. i think you messed up.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8