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1 vote
How many neutrons are there in one atom of 107 Ag(silver-107)

A. 28
B. 47
C. 60
D. 79

2 Answers

6 votes
C. because silvers atomic number is 47 so you subtract 47 from 107 to get the number of neutrons
User Jimeka
by
8.0k points
3 votes

Answer:


60

Answer C is correct

Step-by-step explanation:

Silver has 47 electrons and 47 protons.

So,


mass \: \: number = protons + neutrons \\ \: \: \: \: \: \: \: \: \: \: \: \: \: 107 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \: \: \: \: \: \: \: \: 47 \: \: \: \: \: \: \: \: \: + \: \: \: \: \: \: \: \: \: \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \: \: \: \: \: \: \: 107 - 47 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \: \: \: \: 60

User Polyvertex
by
7.6k points