Classify the following bonds as ionic, covalent, or neither (O, atomic number 8; F, atomic number 9; Na, atomic number 11; Cl, atomic number 17; U, atomic number 92). O with F Ca with Cl Na with Na
A. covalent, ionic, covalent
B. ionic, covalent, neither
C. neither, ionic, covalent
D. covalent, ionic, neither
Answer: D
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A. A city lives at its biocapacity and consumes natural capital without replenishment. B. A city lives off of its natural income and preserves and replenishes natural capital. C. A city relies heavily on fossil fuels. D. A city has a substantial recycling program even though it generates far more waste than it recycles. E. A city uses natural capital and renewable resources with a rapidly growing ecological footprint.
Vietnam is the most urbanized country in Southeast Asia, and is 95 percent urbanized
Indicate whether the statement is true or false
The Northwest physiographic subregion can be described as ________. It is an extension of the ________
Fill in the blank(s) with correct word
Energy use
A. includes much use of biomass in developing countries. B. has been declining in much of the world. C. increased significantly in the richer countries. D. is primarily from alternative energy sources.