Question

1) The letter "p" in the symbol 4p^3 indicates the ___.

A) spin of an electron
B) orbital shape***
C) principal energy level
D) speed of an electron

2) If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?
A) Zero
B) clockwise
C) counterclockwise***

3) According to the aufbau principle, ____.
A) an orbital may be occupied by only two electrons
B) electrons in the same orbital must have opposites spins***
C) electrons enter orbitals of highest energy first
D) electrons enter orbitals of lowest energy first

4) What is the number of electrons in the outermost energy level of an oxygen atom?
A) 2
B) 4
C) 6***
D) 8

5) How many unpaired electrons are in a sulfur atom (atomic number 16)?
A) 0
B) 1
C) 2***
D) 3

6) Stable electrons configurations are likely to contain ___.
A) filled energy sublevels***
B) fewer electrons than unstable configurations
C) unfilled s orbitals
D) electrons with a clockwise spin