How many elements are currently known?

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Study for the IMAT Chemistry Exam. Access flashcards and multiple choice questions; hints and explanations included for each question. Prepare effectively for your exam.

Multiple Choice

How many elements are currently known?

Explanation:
The number of known elements is the total count of elements that have been observed, confirmed in experiments, and officially named by IUPAC. There are 118 such elements, from hydrogen with atomic number 1 up to oganesson with atomic number 118. The last two elements to be added were discovered in the early 21st century and given official names, bringing the total to 118. Elements with atomic numbers higher than 118 have not yet been confirmed, so they are not included in the known count.

The number of known elements is the total count of elements that have been observed, confirmed in experiments, and officially named by IUPAC. There are 118 such elements, from hydrogen with atomic number 1 up to oganesson with atomic number 118. The last two elements to be added were discovered in the early 21st century and given official names, bringing the total to 118. Elements with atomic numbers higher than 118 have not yet been confirmed, so they are not included in the known count.

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