why is helium a noble gas ?

Question

anonymous · Answer

helium is a noble gas because it has a full outer shell (the 1st shell always contains 2 electrons)

anonymous · Answer

den we can also say Be is also noble gas

anonymous · Answer

Because it has full outer shell, and it does not react easily with  other element, uncreative.

anonymous · Answer

And one of the characteristics of Noble gases are that they do not form compounds very easily.

anonymous · Answer

so it means Be i also said to be noble gas on the basis of outermost shell is full....??????????

anonymous · Answer

Be is not a Noble gas, because Be is in group two, meaning it has two electrons in the outer most shell. But, it has two shells. in the first shell you can only have two electrons, in the second shell, not orbital, you can have 8 electrons. This means that Be is not a Noble gas. If you still do not understand, reply back and I will go deeper into it.

anonymous · Answer

ok i get it thanQ