When the outer electron shell is full in an element, this creates a

a) hydrogen atom

b) noble gas

c) royal elements

d) isotopes

B) Nobel gas

Nobel gas is the highly stable due to presence of greatest number of valence electrons in their external shells can hold. Therefore, they once in a while respond with other components since they are as of now stable.  

Other characteristics of the these  gasses are that they all conduct power, fluoresce, are odorless and colorless, and are utilized in numerous conditions when a stable element is required to preserve a secure and steady environment. This chemical arrangement contains helium, neon, argon, krypton, xenon, and radon.  

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