Problem: How many protons, neutrons, and electrons does a magnesium atom with a mass number of 25 contain?

FREE Expert Solution

We are asked to determine the number of protonsneutrons, and electrons in a magnesium atom with a mass number of 25.

Recall that mass number is equal to the sum of the protons and neutrons in the atomic nucleus.


Mass Number = # protons + # neutrons


Also, recall that for a neutral atomthe atomic number is the number of protons and the number of protons equals the number of electrons


Atomic Number = # protons = # electrons


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Problem Details

How many protons, neutrons, and electrons does a magnesium atom with a mass number of 25 contain?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Subatomic Particles concept. You can view video lessons to learn Subatomic Particles. Or if you need more Subatomic Particles practice, you can also practice Subatomic Particles practice problems.