Chemistry, 21.04.2021 15:50, hrcatena

1. What element is this? 2. What is the atomic mass?
3. What is the atomic number?
4. How many energy levels?
5. What is the charge of the nucleus?
6. What is the charge of the electron cloud?
7. What is the charge of the atom?
8. How many protons?
9. How many neutrons?
10. What group number is this element in?

1. What element is this?

2. What is the atomic mass?
3. What is the atomic number?
4. How many en

Answers: 3

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1. What element is this? 2. What is the atomic mass?
3. What is the atomic number?
4....