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ps4
Term | Definition |
---|---|
metal | left of stair step line |
metalloid | border stair step line |
nonmetal | right of the stair step line |
periodic law | repeating chemical and physical properties of element change. |
atomic symbol | identifies an element one two or three numbers , the first letter is always capital. |
proton | a positive subatomic particle that is located in the nucleus having a mass of 1 amu. |
neutron | a subatomic particle with no charge that is located in the nucleus with a mass of 1 amu. |
electron | a negitive subatomic particle located in the electron cloud having a mass of 0 amu. |