Multiple Choice
How many electrons can the first energy level (n = 1) of an atom hold?
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- 1. Intro to General Chemistry3h 48m
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2. Atoms & Elements
The Atom
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the atomic number of an atom that contains 13 protons?
A
13
B
1
C
26
D
6
Verified step by step guidance1
Recall that the atomic number of an atom is defined as the number of protons in its nucleus.
Identify the number of protons given in the problem, which is 13.
Since the atomic number equals the number of protons, the atomic number of this atom is 13.
Understand that the atomic number uniquely identifies an element on the periodic table.
Therefore, an atom with 13 protons has an atomic number of 13.
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