QQuestionChemistry
QuestionChemistry
"As of the end of 2016, 118 elements had been discovered. Which of these statements about the theoretical element 119 is most likely true?
A. It will be a non-metal.
B. It will start a new group.
C. It will start a new period.
D. It will be a noble gas."
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Answer
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Step 1:Let's solve this step by step using the periodic table trends and element properties:
Step 2:: Understand the Current Periodic Table
- As of 2016, the periodic table ended at element 118 (Oganesson) - Elements beyond 118 are superheavy, synthetic, and extremely unstable - The location of element 119 can be predicted based on periodic trends
Step 3:: Analyze the Periodic Table Structure
- Element 119 would be in the 8th period - It would be the first element in the 8th period - Based on electron configuration, it would be in the alkali metal group (Group 1)
Step 4:: Evaluate Each Option
Start a new period: $$\checkmark$$ Also technically correct, but less significant
A. Non-metal: Incorrect. It will be a metal (alkali metal) B. C. D. Noble gas: Incorrect. Noble gases are in Group 18
Final Answer
Element 119 will start a new group (Group 1, alkali metals) in the periodic table.
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