QQuestionChemistry
QuestionChemistry
Each element on the periodic table is assigned a number from 1 to:
A. 117
B. 118
C. 119
D. 120
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Answer
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Step 1:I'll solve this problem step by step following the specified formatting guidelines:
Step 2:: Understand the Context
The problem is asking about the total number of elements currently recognized in the periodic table. This requires knowledge of the most recent updates to the periodic table.
Step 3:: Recall Recent Periodic Table Updates
In recent years, the periodic table has been extended with the addition of synthetic, superheavy elements. Scientists have been working to confirm and officially recognize new elements at the end of the periodic table.
Step 4:: Verify the Current Number of Elements
As of the most recent official recognition by the International Union of Pure and Applied Chemistry (IUPAC), the periodic table contains 118 confirmed elements.
Step 5:: Eliminate Incorrect Options
- Option A (117): Incorrect, as there are 118 confirmed elements - Option B (118): Correct - Option C (119): Incorrect, not yet officially recognized - Option D (120): Incorrect, not yet officially recognized
Final Answer
Key Explanation: - The periodic table currently extends to element 118 (Oganesson) - Elements beyond 118 have been synthesized in laboratories but are not yet officially confirmed - The most recent additions were elements 113, 115, 117, and 118, which were officially recognized in 2015
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