N2(g)+3h2(g)-> 2nh3(g) δh< 0nh3 was synthesized at 200° c in the presence of a powdered os(s) catalyst, leading to the equilibrium system represented above. which of the following changes would result in more nh3(g) in the mixture after equilibrium is reestablished?

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

increased stability in the completion of fluorine's outer shell.