Suppose you take a trip to a distant universe and find that the periodic table there is derived from an arrangement of quantum numbers different from the one on Earth. The rules in that universe are:
principal quantum number =1,2,... (as on Earth);
angular momentum quantum number ℓ=0,1,2,...,−1 (as on Earth);
magnetic quantum number â„“=0,1,2,...,â„“ (only positive integers up to and including â„“ are allowed);
spin quantum number s=−1,0,+1 (that is, three allowed values of spin).
Assuming that the Pauli exclusion principle remains valid in the distant universe, what is the maximum number of electrons that can populate a given orbital there?
maximum number electrons per orbital:
Write the electronic configuration of the element with atomic number 8 in the periodic table. Superscript numbers where appropriate but omit parentheses.
electronic configuration:
What is the atomic number of the second noble gas?
atomic number:
