On the periodic table, vertical columns are called
A) periods.
B) groups or families.
C) sets.
D) metals.
Correct Answer:
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Q12: On the periodic table, horizontal rows are
Q13: Locard's principle states that
A)when two things come
Q14: Sodium belongs to group number _ on
Q15: Which one of the following pairs of
Q16: Which element is present in the greatest
Q18: Identify the halogen.
A)K
B)Ni
C)Pb
D)I
E)Ne
Q19: Which one of the following is not
Q20: Identify which of the following elements is
Q21: How many atoms of carbon are in
Q22: When a substance goes from the gas
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