Multiple Choice
Which element has an atomic number that is exactly double that of silicon?
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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
How many protons are present in an atom of indium (In)?
A
48
B
50
C
47
D
49
Verified step by step guidance1
Recall that the number of protons in an atom is equal to its atomic number, which is unique for each element.
Identify the element given in the problem, which is indium (In).
Look up the atomic number of indium on the periodic table. The atomic number corresponds to the number of protons.
Note that the atomic number of indium is 49, meaning an indium atom contains 49 protons.
Therefore, the correct answer is the number that matches the atomic number of indium, which is 49.
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