Multiple Choice
In the periodic table, the element manganese is represented by a box containing the symbol 'Mn'. If an arrow is pointing to 'Mn', what does this symbol indicate?
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2. Atoms & Elements
Periodic Table: Element Symbols
Multiple Choice
How many elements are currently recognized in the modern periodic table?
A
92
B
118
C
120
D
104
Verified step by step guidance1
Understand that the question asks for the total number of elements currently recognized in the modern periodic table, which includes all naturally occurring and synthetically created elements.
Recall that the periodic table is organized by increasing atomic number, which corresponds to the number of protons in an element's nucleus.
Recognize that the modern periodic table includes elements up to the highest atomic number that has been officially confirmed and named by IUPAC (International Union of Pure and Applied Chemistry).
Note that while some elements beyond uranium (atomic number 92) have been synthesized, the total count includes all elements up to the highest confirmed atomic number.
Conclude that the total number of recognized elements in the modern periodic table is 118, which includes all elements from hydrogen (1) to oganesson (118).
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