1. The word orbital is related to the location of:
A.
Electrons around the nucleus
B.
Protons outside the atom
C.
Neutrons in a chemical bond
D.
Nuclei inside an electron
Correct Answer:
Electrons around the nucleus
2. Which statement about an orbital is correct?
A.
It gives an exact route followed by an electron
B.
It gives a probable region for the presence of an electron
C.
It contains only protons
D.
It is the same as the atomic nucleus
Correct Answer:
It gives a probable region for the presence of an electron
3. An orbital is a region of space associated with the presence of a(n):
A.
Electron
B.
Proton only
C.
Neutron only
D.
Atomic mass unit
Correct Answer:
Electron
4. What is the most important feature of an orbital?
A.
It describes where an electron is likely to be found
B.
It fixes the electron on a circular path
C.
It contains the whole nucleus
D.
It determines the number of neutrons directly
Correct Answer:
It describes where an electron is likely to be found
5. An orbital is different from an orbit because an orbital:
A.
Is a probable region, not a fixed path
B.
Contains only neutrons
C.
Exists only inside the nucleus
D.
Has no relation to electrons
Correct Answer:
Is a probable region, not a fixed path
6. Which phrase completes the definition: An orbital is a region around the nucleus in which an electron has a high:
A.
Probability of being found
B.
Mass of being found
C.
Charge of being found
D.
Number of protons
Correct Answer:
Probability of being found
7. What does the boundary of an orbital generally indicate?
A.
A region within which an electron is likely to be found
B.
The exact path of an electron
C.
The edge of the nucleus
D.
The position of all protons
Correct Answer:
A region within which an electron is likely to be found
8. Which of the following is not a correct description of an orbital?
A.
A region of high electron probability
B.
A three-dimensional space around the nucleus
C.
A fixed path followed by an electron
D.
A region associated with an electron
Correct Answer:
A fixed path followed by an electron
9. The orbital concept is used to describe the probable position of a(n):
A.
Electron
B.
Proton in the nucleus
C.
Neutron in the nucleus
D.
Whole atom's nucleus
Correct Answer:
Electron
10. Which statement best explains why an orbital is not called an electron path?
A.
An orbital gives a region of probability rather than a definite route
B.
An orbital contains no space
C.
An orbital is found only in the nucleus
D.
An orbital contains only protons
Correct Answer:
An orbital gives a region of probability rather than a definite route
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