How many electrons can be accommodated in the 2d subshell?
A) 2
B) 5
C) 10
D) None, there is no 2d subshell.
D
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In order that an electron interact with a magnetic field, the electron must be
A. stationary. B. moving. C. part of an electric current. D. spinning.
Identify the Challenger Deep and its significance in oceanographic history. What will be an ideal response?
Which of the following statements is true regarding the relationship between air pressure and altitude?
A. As one moves up in the atmosphere, pressure decreases; as one moves closer to the earth's surface, pressure increases. B. As one moves lower in the atmosphere, pressure decreases; as one moves closer to the earth's surface, pressure decreases. C. As one moves lower in the atmosphere, pressure decreases; as one moves closer to the earth's surface, pressure increases. D. As one moves up in the atmosphere, pressure increases; as one moves closer to the earth's surface, pressure increases.
What are the hygroscopic particles necessary for the formation of clouds and rain?
A. supersaturated aerosols B. condensation nuclei C. water droplets D. ice crystals E. saturation particles