Multiple Choice
Which statement best describes the reactivity of noble gases on the periodic table?
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Periodic Table: Group Names
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Which of the following sets of elements are classified as noble gases on the periodic table?
A
F, Cl, Br, I, At
B
Li, Na, K, Rb, Cs, Fr
C
B, C, N, O, F, Ne
D
He, Ne, Ar, Kr, Xe, Rn
Verified step by step guidance1
Recall that noble gases are elements found in Group 18 (the last column) of the periodic table. They are characterized by having a full outer electron shell, making them very stable and mostly inert.
Identify the elements in each given set and determine their group in the periodic table:
- F, Cl, Br, I, At are halogens, located in Group 17.
- Li, Na, K, Rb, Cs, Fr are alkali metals, located in Group 1.
- B, C, N, O, F, Ne include elements from Groups 13 to 18, but only Ne is a noble gas in this set.
Compare these with the known noble gases: He, Ne, Ar, Kr, Xe, Rn, which are all in Group 18.
Therefore, the correct set of noble gases is the one containing He, Ne, Ar, Kr, Xe, and Rn.
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