Question

the valence shell configuration of noble gas family is ns^2 np^6. but helium's is 1s^2 why?​

Answer 1

Answer:

3

Explanation:

Over the past decade traditionalists have launched a series of attacks on scientific approaches to international politics. Most of the arguments employed against the scientific approach stem from those used earlier by E. H. Carr in The Twenty Years’ Crisis. The general arguments that have been employed include these among others: that politics involves purpose in a way that physical science does not; that scientific knowledge is applicable to facts, but understanding, wisdom, or intuition are required for areas where human purpose is involved; that those pursuing scientific models tend to mistake their models for reality; that scientific method requires high precision and measurement and therefore is incapable of coping with the most important elements of international politics; and that the practitioners of scientific method can never be sure that they have not left something out of their model.

Answer 2

Answer:

Explanation:

It only has two electrons in its outer shell so its valence electron configuration is 1s^2. Even though it only has two electrons, it is grouped with elements that have eight valence electrons. Helium is still happy because its outermost shell is completely full making it extremely stable.