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An atom has a mass number of 9 and 5 neutrons What is its atomic number? A. 14 B. 11 C. 19 D. 4

An atom has a mass number of 9 and 5 neutrons What is its atomic number? A. 14 B. 11 C. 19 D. 4
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3 votes
An atom has a mass number of 9 and 5 neutrons What is its atomic number?

A. 14
B. 11
C. 19
D. 4

asked
User Chris Maddern
by
8.0k points

1 Answer

2 votes

Answer:

D. 4

Step-by-step explanation:

mass number - number of neutrons = number of protons

answered
User Ed Smith
by
8.5k points
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