Answer:
The correct answer is - Na2He, Disodium helide
Explanation:
The given elements of 11Na and 2He form a molecule that is stable above 113 gigapascal pressure where noble gas helium contains 2 electrons in the outer shell combine with sodium is group 1 metal. The molecule is called the disodium helide and represented as Na2He.
The correct answer is - Na2He, Disodium helide
