Elements in Group 8A are known as the ________.
A) halogens
B) alkali metals
C) alkaline earth metals
D) chalcogens
E) noble gases
Correct Answer:
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Q113: Which metal forms cations of differing charges?
A)K
B)Cs
C)Ba
D)Al
E)Sn
Q114: The nucleus of an atom contains _.
A)electrons
B)protons,
Q115: Horizontal rows of the periodic table are
Q116: Potassium is a _ and chlorine is
Q117: 520 pm is the same as _
Q119: _ and _ reside in the atomic
Q120: Lithium is a _ and magnesium is
Q121: Barium forms an ion with a charge
Q122: The empirical formula of a compound with
Q123: The charge on the manganese in the
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