Exam 2: Atoms, Molecules, and Ions

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The suffix - ide is used .

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The mass number of an atom of 118Xe is _ .

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The formula for chromium (II) iodide is CrI2.

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200 pm is the same as Å.

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Silver has two naturally occurring isotopes with the following isotopic masses: Silver has two naturally occurring isotopes with the following isotopic masses:   The average atomic mass of silver is 107.8682 amu. The fractional abundance of the lighter of the two isotopes is . The average atomic mass of silver is 107.8682 amu. The fractional abundance of the lighter of the two isotopes is .

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Which one of the following is not true concerning cathode rays?

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Gravitational forces act between objects in proportion to their

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Potassium is a _ and chlorine is a .

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Lithium is a and magnesium is a .

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The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu. The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu.

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Oxygen is a _ and nitrogen is a _.

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Which species has 54 electrons?

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The name of the ionic compound NH4CN is _ .

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The correct name for SrO is .

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In the symbol below, X = In the symbol below, X =

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Which atom has the smallest number of neutrons?

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The name of the ionic compound (NH4)3PO4 is _ .

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Which pair of substances could be used to illustrate the law of multiple proportions?

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An atom of 17O contains protons.

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What is the formula of the compound formed between strontium ions and nitrogen ions?

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