Question

question 7
1 pts
what is the name given to the figure in which a line bisects two arrows pointed in opposite directions?
a paired shell
a paired orbital
a filled shell
a filled orbital

question 8
1 pts
which of the following rules for a multielectron system is violated when electrons in the same orbital have the same spin?
aufbau
hund
pauli

Explanation:

For Question 7, in electron - orbital diagrams, when two arrows (representing electrons) are pointed in opposite directions and bisected by a line, it represents a paired orbital. A paired shell is not the correct term for this specific representation. A filled shell refers to a complete energy level, and a filled orbital implies the orbital is completely full with two electrons of opposite spin, but the key here is the paired nature of the electrons which is best described by "paired orbital".
For Question 8, the Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers, and in the context of an orbital, electrons in the same orbital must have opposite spins. When electrons in the same orbital have the same spin, the Pauli exclusion principle is violated. The Aufbau principle deals with the order of filling orbitals with electrons, and Hund's rule deals with the filling of degenerate orbitals with electrons having parallel spins before pairing occurs.

Answer:

Question 7: a paired orbital
Question 8: Pauli