Chem 3rd Exam

Chem 3rd Exam - Name Date 1 In the gaseous phase which of...

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Name: __________________________ Date: _____________ 1. In the gaseous phase, which of the following diatomic molecules would be the most polar? A) CsF B) CsCl C) NaCl D) NaF E) LiF 2. The electron configuration for the carbon atom is: A) 1 s 2 2 s 2 2 p 2 B) [He]2 s 4 C) [Ne]2 s 2 2 p 2 D) 1 s 2 2 p 4 E) none of these 3. Which one of the following types of radiation has the shortest wavelength, the greatest energy, and the highest frequency? A) Ultraviolet radiation. B) Infrared radiation. C) Visible red light. D) Visible blue light. E) None, because short wavelength is associated with low energy and low frequency, not high energy and high frequency. 4. If l = 3, how many electrons can be contained in all the possible orbitals? A) 7 B) 6 C) 14 D) 10 E) 5 5. When a metal reacts with a nonmetal a covalent bond is formed. A) True B) False
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6. In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus: A) Energy is emitted. B) Energy is absorbed. C) No change in energy occurs. D) Light is emitted. E) None of these. 7. The magnetic quantum number is related to the orientation of the orbital in space relative to the other orbitals in the atom. A) True B) False 8. Which of the following compounds contains only one unshared pair of valence electrons? A) NH 3 B) H 2 O C) CH 4 D) NaCl E) BF 3 9. According to the VSEPR model, the arrangement of electron pairs around NH 3 and CH 4 is A) different, because in each case there are a different number of atoms around the central atom B) different, because in each case there are a different number of electron pairs around
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Chem 3rd Exam - Name Date 1 In the gaseous phase which of...

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