Question

question 5
helium is in group 18 which is part of the \p block\. why is helium still considered to be in the \s block?\
helium can not have more than two electrons.
helium was one of the first elements in the universe.
helium has similar properties to beryllium.
helium is an inert gas.

Explanation:

The electron - configuration of helium fills the 1s orbital. Elements in the s - block have their outermost electrons in s orbitals. Helium has only two electrons which completely fill its 1s orbital, so it is considered an s - block element despite being in group 18. The key is its electron - configuration rather than its group placement or other properties like being an inert gas or its cosmic origin.

Answer:

Helium can not have more than two electrons.