What is the importance of Noble gas configuration

Noble gas electron configurations are easier to write because they are shorter than full electron configurations. To understand the chemistry of an element, it's most important to know about the electrons in the highest energy levels. Lead has four valence electrons and its chemistry is based on this fact.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.