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9s4

TermDefinition
metal these are those elements located to the left of the stair step line. They tend to lose electrons in chemical reactions.
nonmetals These are located to the right of the stair step line.They tend to gain electrons in chemical reactions to form negative ions.
metalloids They border the stair step line and have some properties of both metals and nonmetals.
periodic law : the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of all of their properties.
proton a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign
neutron There are two components that make up the central core: positively charged protons and neutrons that
electron a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids...
atomic symbol ,this has a symbol is a code for a chemical element.
Created by: lydia91607