Which horizontal row of the periodic table contains the most elements?
A) row 4
B) row 5
C) row 6
D) They all contain the same number of elements.
Correct Answer:
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Q11: The observation that 15.0 g of hydrogen
Q12: The vertical columns of the periodic table
Q13: Methane and oxygen react to form carbon
Q14: What is the chemical symbol for manganese?
A)Hg
B)Mg
C)Mn
D)Na
Q15: Which of the following statements does not
Q17: Which group of elements reacts violently with
Q18: Which of the following statements does not
Q19: Which group 5A element is most metallic?
A)N
B)P
C)Sb
D)Bi
Q20: The horizontal rows of the periodic table
Q21: Which of the following represent isotopes? A:
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