Chem Unit 2

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Last updated 1:49 AM on 4/8/26
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10 Terms

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Groups 1,2,17,18

Alkali Metals, Alkaline Metals, Halogens, Noble Gases

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Atomic Radius

The distance of the neutron to the outermost shell of an atom 

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Ionic Radius

The size of the atom after gaining or losing electrons

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Ionization Energy

The energy change when an atom loses an electron(s), and increases from right to left(tighter hold onto electrons)

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Electron Affinity

The energy change after a (usually gas) atom gains an electron, increasing from left to right (the smaller the atomic radius the more electron affinity)

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Percent composition

mass of element|mass of sample x 100

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Avarage mass

 % abundance of element (mass of element) + % abundance of element (mass of element)

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Oxyacids

Hydrogen + Oxygen + element

Per______ic Acid

______ic Acid

_____ous Acid

Hypo_____ous Acid 

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Oxyanions

 Oxygen + anion

Per_____ate

____ate

____ite

Hypo____ite 

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Binary Acids

Hydrogen + element

Hydro____ic Acid