Multiple Choice
How many electrons are present in a neutral atom of potassium (K)?
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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
An ion has 106 electrons, 162 neutrons, and a nuclear charge of +108. What is the mass number of this ion?
A
268
B
214
C
108
D
270
Verified step by step guidance1
Identify the given information: the ion has 106 electrons, 162 neutrons, and a nuclear charge of +108. The nuclear charge corresponds to the number of protons in the nucleus.
Determine the number of protons: since the nuclear charge is +108, the ion has 108 protons.
Recall that the mass number (A) is the sum of the number of protons (Z) and neutrons (N): \(A = Z + N\).
Substitute the known values into the mass number formula: \(A = 108 + 162\).
Calculate the sum to find the mass number of the ion.
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