Which species has 63 neutrons?

Name: Which species has 63 neutrons?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

To determine the number of neutrons, subtract the atomic number from the mass number. 
For option A, mass number = 112, atomic number = 43, neutrons = (112-43) = 69
For option B, mass number = 112, atomic number = 49, neutrons = (112-49) = 63
For option C, mass number = 63, atomic number = 29, neutrons = (63-29) = 34
For option D, mass number = 152, atomic number = 63, neutrons = (152-63) =89
Therefore, option B has 63 neutrons.

Which Species Has 63 Neutrons? A) 43112Cd{ }_{43}^{112} \mathrm{Cd}43112​Cd B) 49112 In { }_{49}^{112} \text { In }49112​ In

Which Species Has 63 Neutrons?
A) ${ }_{43}^{112} \mathrm{Cd}$ B) ${ }_{49}^{112} \text { In }$