Test Bank for Organic Chemistry 1st Edition Mullins
Chapter 2 General Chemistry Translated: Finding the Electrons
1) Atoms with the same number of protons but different numbers of neutrons are called .
Answer: isotopes
Diff: 1
Section: 2.1
LO: G1 | 2.0.1
2) The atomic number of boron is 5. The correct electronic configuration of boron is:
- 1s
2 2s 3
- 1s
2 2p 3
- 1s
2 2s 2 2p 1
- 2s
2 2p 3
- 1s
2 2s 2 3s 1
Answer: C
Diff: 1
Section: 2.2
LO: G1 | 2.0.1
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3) How many distinct p orbitals exist in the second electron shell, where n = 2?
- 2
- 3
- 4
- 5
- 6
Answer: B
Diff: 1
Section: 2.2
LO: G1 | 2.0.1
4) The tells us that each orbital can hold a maximum of 2 electrons.
- aufbau principle
- Pauli exclusion principle
- Hund's rule principle
- LeChatelier principle
- uncertainty principle
Answer: B
Diff: 1
Section: 2.2
LO: G1 | 2.0.4
5) A node is a region of high electron density between the two atoms in a covalent bond.
Answer: FALSE
Diff: 1
Section: 2.2
LO: G1 | 2.0.3
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6) When filling two or more orbitals of the same energy with electrons, the electrons will go into different orbitals rather than pair up in the same orbital.
Answer: TRUE
Diff: 1
Section: 2.2
LO: G1 | 2.0.3
7) The electron density of orbitals has spherical symmetry.
Answer: s
Diff: 1
Section: 2.2
G1 | 2.0.1 | 2.0.3
8) An oxygen atom has valence electrons.
Answer: 6
Diff: 1
Section: 2.2
LO: G1 | 2.0.4
9) In a carbon atom, the 2s and 2p orbitals are the same energy.
Answer: FALSE
Diff: 2
Section: 2.2
LO: G1 | 2.0.3
10) The element with the electronic configuTraBtiEonX1AsM22.s2C2Op6M3s1 is .
Answer: sodium
Diff: 2
Section: 2.2 3 / 4
LO: G1 | 2.0.1
11) Provide the electron configuration of phosphorus.
Answer: 1s22s22p63s23p3
Diff: 2
Section: 2.2
LO: G1 | 2.0.1
12) A carbon-hydrogen bond in ethane (CH3CH3) is best described a .
- highly polar
- essentially nonpolar
- ionic
- a multiple bond
- resonance stabilized
Answer: B
Diff: 1
Section: 2.3
LO: G2 | 2.1.5
MCAT LO: MCAT1.3
13) The electronegativity of elements on the periodic table increases going a column and to the in each row.
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