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Chemistry

Ch. 4 b

QuestionAnswer
The electron dot formula for carbon dioxide, CO2, is 21) A) B) C) D) D
All of the following species are isoelectronic to Mg2+ EXCEPT A) Na+. B) Li+. C) O2-. D) Ne. B
The inertness of the noble gases is due to A) the bonds they form with other elements. B) the unique structure of their nuclei. C) the special number of protons and neutrons. D) the number and arrangement of their electrons. D
Which of the following molecules is NOT likely to exist? A) He2 B) CCl4 C) F2 D) N2 A
What is the name of the compound with the formula CCl4? A) carbon chloride B) carbon tetrachloride C) carbon(IV) chloride D) chlorine carbonide B
When magnesium reacts with chlorine, magnesium ions, Mg2+, and chloride ions, Cl-, are formed. In this reaction, magnesium atoms A) lose protons. B) gain protons. C) gain electrons. D) lose electrons. D
With respect to chemical bonding, which particles play the least active role? A) nucleons B) valence electrons C) core electrons D) All play equal roles. A
In a nonpolar covalent bond, electrons are A) transferred. B) uncharged. C) shared equally. D) shared unequally. C
If a central atom has a total of three electron sets and no lone pairs attached to it, the geometry about the central atom is A) triangular. B) pyramidal. C) linear. D) tetrahedral A
The nature of bonding forces in a piece of matter influences which observable property of the matter? A) strength and rigidity B) chemical reactivity C) state of the matter at room temperature D) all of the above D
An oxide ion is A) O+. B) O2+. C) O2-. D) O-. C
Which is the electron dot structure of sulfur? A) 2 B) C) D) B
The shape of a methane molecule is best described as A) triangular. B) bent. C) linear. D) tetrahedral D
All of the following pairs are isoelectronic EXCEPT A) F- and Ne. B) Ar and Ca2+. C) Na+ and Mg2+. D) K and Ar. D
Which substance has polar covalent bonds? A) O2 B) Ca2C C) NH3 D) Cl2 C
The formula of magnesium nitride is A) Mg2N. B) MgN. C) Mg2N3. D) Mg3N2. D
Which substance has ionic bonds? A) SO3 B) CCl4 C) N2 D) K2S D
Which is right about Molecules? compound contains only polar bonds can be nonpolar. compound contains only nonpolar bonds can be polar. compound contains only polar bonds must be polar. compound contains both polar and nonpolar bonds must be nonpolar. A
Which atom is least likely to form an ion? A) carbon, C B) bromine, Br C) aluminum, Al D) phosphorus, P A
In a polar covalent bond, electrons are A) transferred. B) shared unequally. C) shared equally. D) uncharged. B
Created by: zjoss012
 

 



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