________ bonding is the sharing of valence atoms between a pair of atoms

A) Ionic
B) Metallic
C) Hydrogen
D) Covalent


Answer: D

Environmental & Atmospheric Sciences

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________ are erosional features produced by valley (alpine) glaciers

A) Moraines B) Cirques C) Eskers D) Drumlins

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As it pertains to differences in land-water heating, transparency

A) is greater in land than water. B) refers to the fact that land is opaque and water is transparent. C) produces a heat loading at the surface of water bodies. D) produces a photic layer that normally is 2000 m (6600 ft.) deep.

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The ammonium ion has the formula NH4+. How many electrons must be shown in the Lewis structure of the ammonium ion?

A) 4 B) 5 C) 8 D) 9

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