Which of the following is true when comparing two electrons which are in different shells of an atom?
A) The electron in the higher numbered shell is closer to the nucleus and is easier to remove.
B) The electron in the higher numbered shell is closer to the nucleus and is harder to remove.
C) The electron in the higher numbered shell is further from the nucleus and is easier to remove.
D) The electron in the higher numbered shell is further from the nucleus and is harder to remove.
C
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Which one of the following is the most abundant gas in the atmosphere
oxygen argon carbon dioxide nitrogen
A central peak, such as a volcanic mountain, generally produces a ________ drainage pattern
A) parallel B) trellis C) annular D) radial
The region called ____ has a semi-arid climate and typically has short bunch grass, scattered low bushes, sparse trees, or sagebrush
a. ?steppe b. ?savannah c. ?chaparral d. ?tundra e. ?taiga
According to plate tectonics theory, large ________ circulate molten rock in different directions within Earth's mantle.
A) waves B) convection cells C) conductive cells D) magnetic cells E) subduction cells