Textbook Question
Write the name and symbol of the element with the following atomic number: (4.1, 4.2)h. 92
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4. Atoms and Elements
Periodic Table: Element Symbols
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Which element has 35 protons in its nucleus?
A
Krypton (Kr)
B
Selenium (Se)
C
Bromine (Br)
D
Arsenic (As)
Verified step by step guidance1
Recall that the number of protons in the nucleus of an atom defines the atomic number of the element.
Identify the atomic number of each element given in the options: Krypton (Kr), Selenium (Se), Bromine (Br), and Arsenic (As).
Use the periodic table to find the atomic number for each element. For example, the atomic number of Bromine (Br) is 35.
Match the atomic number 35 to the element with that number of protons, which is Bromine (Br).
Conclude that the element with 35 protons in its nucleus is Bromine (Br), since the atomic number equals the number of protons.
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