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Answer: Atoms that have lost or gained electrons and are now charged (different number of electrons). By putting the correct amount of protons and neutrons in the center, and you cannot have more than 2 protons/neutrons than the other if you want it to be stable. The number of protons determines the name of the element.
Answer:
S orbital:spherical
P orbital:dumbbell
D orbital:double dumbbell
F orbital:complex
Explanation:
