A. Li also know as Lithium has 3 protons.
B. To find number of neutrons in a element you subtract number of protons by mass number.
C. Protons have a positive charge.
D. Electrons have a negative charge.
E. Neutrons have no charge and are neutral.
Radon. As you move down a group in the periodic table you essentially add new energy levels to the one above it, making the atom larger.
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<u>ANSWER</u></h3>
2. Neon, only
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<u>EXPLANATION</u></h3>
When Na and F combine they form an electron configuration of 2-8. Na electron configuration is 2-8-1 while F is 2-7, so when they form an ionic bond F will gain Na outermost electron to complete its valence shell due to having a higher negativity. Neon has an electron configuration of 2-8 but argon has 2-8-8.
1. Cell division prevents cell from becoming too large
2. It’s the way cells reproduce so you can grow and heal injuries
3. There are more cells and they are smaller which means they will be more efficient
