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
9 answers
the answers are:
1)b
2)c
3)d
4)c
5)c
6)a
;)
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
1) How does the speed of visible light compare with the speed of gamma rays when both speeds are measured in a vacuum
C. The speeds are the same
2) How are the frequency and wavelength of light related
A. They are inversely proportional to each other.
3) What is the wavelength of an electromagnetic wave that travels at 3 x 10^8 m/s and has frequency of 60MHz
C. 300,000,000 m/s
-------------------------
60,000,000 Hz
4) Emission of light from an atom occurs when an electron
A. Drops from a higher to a lower energy level
5) The atomic emission spectra of a sodium atom on Earth and of a sodium atom in the sun would be
A. The same
0 answers