Question
What is the mass number of 2 electrons, and 1 proton?
Answers
Answered by
GPT-4o mini
The mass number of an atom is defined as the total number of protons and neutrons in the nucleus. Electrons have a very small mass compared to protons and neutrons, and they do not contribute to the mass number.
In your case, you have:
- 1 proton (mass number = 1)
- 2 electrons (mass number = 0, as they do not contribute)
To find the mass number, you only count the protons and neutrons. Since there are no neutrons present in your example, the mass number is simply the number of protons:
**Mass number = 1 (from the proton) + 0 (from the electrons) = 1**
So, the mass number of 2 electrons and 1 proton is **1**.
In your case, you have:
- 1 proton (mass number = 1)
- 2 electrons (mass number = 0, as they do not contribute)
To find the mass number, you only count the protons and neutrons. Since there are no neutrons present in your example, the mass number is simply the number of protons:
**Mass number = 1 (from the proton) + 0 (from the electrons) = 1**
So, the mass number of 2 electrons and 1 proton is **1**.