Which of the following elements is the simplest atom?
A) Hydrogen (H #1)
B) Helium (He #2)
C) Nitrogen (N #7)
D) Oxygen (O #8)
Correct Answer:
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Q15: Which of the following statements is true
Q16: The fundamental unit of matter is the
A)proton.
B)neutron.
C)electron.
D)atom.
Q17: The nucleus of an atom contains
A)protons.
B)neutrons.
C)protons and
Q18: Which of the following statements is true
Q19: Which of the following forms of electromagnetic
Q21: Your x-ray machine runs off 110 volts.Theoretically
Q22: Which would you adjust if you wanted
Q23: Within the x-ray tube,electrons are generated by
Q24: The lead collimator
A)carries away the heat produced
Q25: In the dental x-ray tube,the number of
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