What does an un-ionized atom always contain?
A) the same number of protons and neutrons
B) the same number of protons and electrons
C) twice as many protons as neutrons
D) twice as many neutrons as protons
Correct Answer:
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Q3: If you know the period and semi-major
Q8: Q8: Which of the following is a characteristic Q12: Which of the following contains two or Q15: What makes up the neutral hydrogen atom? Q16: What is the definition of Absolute Zero? Q24: How can the density of the Sun Q28: What is the sequence of star colours Q29: What is the temperature of an object Q40: The Sun emits its maximum intensity of
A)one
A)zero
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