Multiple Choice
Which of the following is NOT an inert gas?
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2. Atoms & Elements
Periodic Table: Group Names
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Which of the following is NOT a rare earth (lanthanide) element?
A
La (Lanthanum)
B
Ce (Cerium)
C
Nd (Neodymium)
D
Ag (Silver)
Verified step by step guidance1
Understand that rare earth elements primarily refer to the lanthanide series, which includes elements with atomic numbers 57 through 71.
Identify the elements listed: La (Lanthanum), Ce (Cerium), and Nd (Neodymium) are all part of the lanthanide series, hence they are rare earth elements.
Recognize that Ag (Silver) is not part of the lanthanide series; it is a transition metal with atomic number 47.
Recall that the lanthanides are typically found in the f-block of the periodic table, while silver is located in the d-block.
Conclude that Ag (Silver) is NOT a rare earth (lanthanide) element because it does not belong to the lanthanide series.
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