Cobalt has an atomic mass of 59 and an atomic number of 27. What does this information reveal about most cobalt atoms?
A) They contain more neutrons than protons.
B) They naturally have a net negative charge.
C) They attract protons more strongly than electrons.
D) They form ions with a charge of 127 in compounds.
Correct Answer:
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Q1: + O₂(g) --> 2SO₃(g)
What is the correct
Q2: Which of the following molecules exhibits resonance?
A)H₂O
B)CO₂
C)O₂
D)O₃
E)SO₂
Q4: Three identical balloons each contain one mole
Q5: A student adds iron filings to a
Q6: The equation below shows the reaction of
Q7: Iron(II) chloride (FeCL2) is a product of
Q8: The reduction of carbon dioxide by hydrogen
Q9: A neutral atom has an outer shell
Q10: Which of the following statements best explains
Q11: The average distance between molecules always increases
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