Multiple Choice
Periodic Table: Element Symbols — What is the chemical symbol for the element sodium?
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4. Atoms and Elements
Periodic Table: Element Symbols
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Which element has 4 protons in its nucleus?
A
Carbon (C)
B
Boron (B)
C
Beryllium (Be)
D
Lithium (Li)
Verified step by step guidance1
Recall that the number of protons in the nucleus of an atom defines the element's atomic number.
Identify the atomic numbers of the given elements: Carbon (C) has 6 protons, Boron (B) has 5 protons, Beryllium (Be) has 4 protons, and Lithium (Li) has 3 protons.
Match the atomic number to the number of protons: since the question asks for the element with 4 protons, look for the element with atomic number 4.
Recognize that Beryllium (Be) has an atomic number of 4, meaning it has 4 protons in its nucleus.
Conclude that the element with 4 protons is Beryllium (Be).
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