Test 4 - Electrons In Atoms
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A quiz covering electron configurations, electronic orbitals, valence electrons, periodic trends, and ionization of atoms.
- 1.What is the general shape of an s orbital?
- A.
Spherical
- B.
Four-leaf clover
- C.
Cylindrical
- D.
Figure-eight
- 2.A cation
- A.
Has a negative charge
- B.
Has gained electrons
- C.
Has a positive charge
- D.
Has no charge
- 3.According to the Heisenberg Uncertainty Principle,
- A.
Electrons are added to orbitals in order of increasing energy.
- B.
The number of electrons in an atom is uncertain.
- C.
It is impossible to know both the velocity and position of an electron.
- D.
No orbital in a sublevel may be empty if two electrons are paired in that sublevel.
- 4.Which of the following atoms has the greatest ionization energy?
- A.
Sulfur
- B.
Silicon
- C.
Chlorine
- D.
Magnesium
- 5.Which of the following would be the LEAST stable?
- A.
An atom of N in its excited state electron configuration
- B.
An ion of Na+
- C.
An atom of P in its ground state electron configuration
- D.
An atom of Ar
- 6.What is the electron configuration for selenium?
- A.
1s22s22p63s23p64s24d104p4
- B.
1s22s22p63s23p64s23d104p4
- C.
1s22s23s23p64s23d104p4
- D.
1s22s22p63s23p64s23d104p2
- 7.The energy change associated with the gain of an electron is called
- A.
Electronegativity
- B.
Ionization energy
- C.
Electron capture
- D.
Electron affinity
- 8.What is the maximum number of sublevels in the third energy level?
- A.
1
- B.
2
- C.
3
- D.
4
- 9.Which of the following atoms would have a very high electronegativity?
- A.
Oxygen
- B.
Titanium
- C.
Calcium
- D.
Aluminum
- 10.How will an atom of magnesium obtain an octet?
- A.
By losing two electrons
- B.
By gaining two electrons
- C.
By gaining six electrons
- D.
By losing six electrons
- 11.How many d orbitals are found in a zinc atom?
- A.
5
- B.
10
- C.
1
- D.
30
- 12.Which of the following elements does NOT have two valence electrons?
- A.
Lithium
- B.
Helium
- C.
Calcium
- D.
Iron
- 13.Which of the following elements has the largest atomic radius?
- A.
Magnesium
- B.
Beryllium
- C.
Strontium
- D.
Calcium
- 14.According to Hund's Rule,
- A.
Electrons are added to orbitals in order of increasing energy.
- B.
The number of electrons in an atom is uncertain.
- C.
It is impossible to know both the velocity and position of an electron.
- D.
No orbital in a sublevel may be empty if two electrons are paired in that sublevel.
- 15.How many electrons in molybdenum are found in the fourth energy level?
- A.
6
- B.
12
- C.
13
- D.
2
- 16.Atoms or ions with an octet will be
- A.
Anions.
- B.
Noble gases.
- C.
Highly electronegative.
- D.
Stable.
- 17.An atom of silicon will have how many valence electrons?
- A.
14
- B.
2
- C.
8
- D.
4
- 18.Which of the following atoms has an octet?
- A.
Chlorine
- B.
Argon
- C.
Sodium
- D.
Nickel
- 19.Which of the following elements has six valence electrons?
- A.
Ba
- B.
Cr
- C.
Te
- D.
C
- 20.Which of the following atoms would have the LOWEST ionization energy?
- A.
Lithium
- B.
Carbon
- C.
Neon
- D.
Fluorine
- 21.How many electrons are found in the third energy level of calcium?
- A.
2
- B.
6
- C.
8
- D.
10
- 22.What is the electron configuration for scandium?
- A.
1s22s22p63s23p64s24d1
- B.
1s22s22p63s23p64s23d1
- C.
1s22s22p63s23p63d3
- D.
1s22p63s23p64s23d1
- 23.Elements that have seven valence electrons are
- A.
Metals.
- B.
Halogens.
- C.
Noble gases.
- D.
All found in Group 7 of the Periodic Table.
- 24.Fluorine has a very high
- A.
Atomic radius.
- B.
Octet.
- C.
Electron configuration.
- D.
Electronegativity.
- 25.What is the symbol for the gallium ion?
- A.
Ga2+
- B.
Ga5+
- C.
Ga3+
- D.
Ga4+
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