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An atom of a certain element has 33 protons, 33 electrons, and a mass number of 75. How many neutrons are in this atom?
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38 votes
38 votes
An atom of a certain element has 33 protons, 33 electrons, and a mass number of 75. How many neutrons are in this atom?

User Himel Das
by
2.8k points

2 Answers

25 votes
25 votes

Answer:

42 neutrons

Step-by-step explanation:

User Vadim Bulavin
by
3.0k points
17 votes
17 votes

Answer:

42 neutrons

Step-by-step explanation:

Mass number = number of protons + number of neutrons

number of neutrons = Mass number - number of protons

= 75 - 33

= 42

User Rossi
by
3.0k points
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