객관식
Which two elements were first produced by Glenn Seaborg's group, and what are their chemical symbols?
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2. Atoms & Elements
Periodic Table: Element Symbols
Multiple Choice
What is the atomic number of the element iron (Fe)?
A
26
B
24
C
56
D
29
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검증된 단계별 안내1
Understand that the atomic number of an element is the number of protons in the nucleus of an atom of that element.
Recall that the atomic number uniquely identifies an element on the periodic table.
Locate iron (Fe) on the periodic table to find its atomic number.
Note that the atomic number is usually written above the element symbol on the periodic table.
Identify the atomic number of iron (Fe) as 26, which means iron has 26 protons.
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