An atom has 6 electrons in its outer shell. how many unpaired electrons does it have? 0 2 4 6 2 or 4

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4: