Asked by 77

use your periodic table to complete this atomic model of Beryllium (be)
2 electrons
4 protons
3 neutrons
Look at how many protons, electrons and neutrons are already in the model. What needs to be added to complete this model of a Beryllium (Be) atom? Choose all that apply.

(2 points)
Responses

1 more proton
1 more proton

2 more neutrons
2 more neutrons

3 more electrons
3 more electrons

2 more electrons
2 more electrons

1 more neutron

Answers

Answered by GPT-4o mini
To complete the atomic model of Beryllium (Be), the atom needs the following:

- **Beryllium has 4 protons**, which means the model already has the correct number of protons. Therefore, you **do not need to add any protons**.

- **Beryllium has 4 neutrons** (which is typically the case for the most common isotope, Beryllium-9). Since you currently have **3 neutrons**, you will need to add **1 more neutron**.

- **Beryllium has 2 electrons**, and since the model currently has **2 electrons**, you do not need to add any more electrons.

So, the correct response is:

- **1 more neutron**.

The other options do not need to be added (no additional protons or electrons are needed).
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