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Chemical Elements

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Atomic Number:


Definitionssee Mrs. Faulkner's definitions

Atomic Mass: 107.8682 amuMelting Point: 961.93 ºC Boiling Point: 2212.0 ºCNumber ofValence Electrons: 1Classification:Transitional Metal

Atomic Number: The number of protons in an atom, it is what makes elements different.Atomic Mass:The number of protons + neutrons in an atomValence Electrons:The number of electrons in the outer energy level of an atom.Oxidation Number:The number of electrons an atom will give away or will take to become stable.Group/Family:All elements in the same vertical column of the periodic table, these elements are similar.Period:All elements in the same horizontal row of the Periodic table, these elements all have the same number of valence electrons.Isotope:Atoms of the same element with different numbers of neutrons therefore a different Atomic Mass.

Parts of an Atomsee Mrs. Faulkner's defintions

Define Proton: A positively charged in the atom; found in the nucleus.The part of the atom in which the proton is found:in the nucleusThe charge of a proton:PositivelyDefine Neutron: A neutrally charged particle in the atom; found in the nucleus The part of the atom in which the neutron is found:in the nucleusThe charge of a neutron:Neutrally Define Electron: A negatively charged particle in the atom; The part of the atom in which the electron is found:in various levels of the electron cloud which surrounds the nucleusThe charge of an electron:Negative

Discoverychemicalelements.comDiscovered by: UnknownDiscovered when: known to the ancientsUses: jewelry, photography, electrical conductor

Atomic Structure

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