Beryllium's atomic mass is 9, and its atomic number is 4. How many protons are found in a beryllium atom?
A) 9
B) 13
C) 4
D) 5
Correct Answer:
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Q10: The bond between oppositely charged ions is
Q11: In order to have a positive charge,
Q12: _ is an example of an element.
A)Water
B)Nitrogen
C)Glucose
D)Salt
Q13: What name is given to bonds that
Q14: How do radioactive isotopes differ from isotopes?
A)Radioactive
Q16: The hydrogen and oxygen atoms of a
Q17: Consider the following reaction. What type of
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Q19: An uncharged atom of mercury has an
Q20: Isotopes of an element have the same
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