Multiple Choice
What is the atomic number of the element silicon (Si)?
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2. Atoms & Elements
Periodic Table: Element Symbols
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How many synthetic elements are currently recognized on the periodic table of elements?
A
12
B
36
C
8
D
24
Verified step by step guidance1
Understand that synthetic elements are those that do not occur naturally and have been created artificially in laboratories or nuclear reactors.
Recall that the periodic table includes elements with atomic numbers starting from 1 (Hydrogen) up to the highest confirmed element, which currently is element 118 (Oganesson).
Identify that synthetic elements generally start from element 93 (Neptunium) onward, as elements with atomic numbers 1 to 92 occur naturally or have at least trace natural occurrence.
Count the number of elements from atomic number 93 to the highest confirmed element (118) to find how many synthetic elements are recognized.
Compare this count to the options given to select the correct number of synthetic elements currently recognized on the periodic table.
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