Helium only possesses two valence electrons, while the other noble gasses posses eight
Answer:
The parts of an atom are<em><u> protons, electrons, and neutrons.</u></em>
A proton is positively charged and is located in the center or nucleus of the atom.
Electrons are negatively charged and are located in rings or orbits spinning around the nucleus.
The number of protons and electrons is always equal.
Answer:
A number is right I think
Answer:
B is krypton
Explanation:
Atomic radius increases when going down a group so Helium is smallest and radon is biggest.
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