Question

please answer only the marked questions

Answer 1

26. Z will be more reactive because it does not have stable electronic configuration
27. Because they have stable electronic configuration so they do not donate or accept electrons

Answer 2

26.Element Z will be more reactive than elementX.Because element Z require 2 electrons to get octect configuration but element X is in octect configuration

27.nobelgases are low reactive because they have octect configuration.They are stable .they doesn't hain or lose electrons .therefore they dont take part in chemical reactions