Question

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:

1. principal quantum number n = 1, 2, . . . (as on Earth);
2. angular momentum quantum number ℓ = 0, 1, 2,. . . , n – 1 (as on Earth);
3. magnetic quantum number mℓ = 0, 1, 2, . . . , ℓ (only positive integers up to and including ℓ are allowed);
4. spin quantum number ms = –1, 0, 1 (that is, three allowed values of spin).

(a) Assuming that the Pauli exclusion principle remains valid in the alternate universe, what is the maximum number of electrons that can populate a given orbital there?

(b) Write the electronic configuration of the element with atomic number 8 in the periodic table.Formatting: superscript numbers where appropriate but omit parentheses.


(c) What is the atomic number of the second noble gas?

Answer 1

a) 3
b) 1s^3 2s^3 2p^2
c) 12

Answer 2

2222