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ch 17-18 vocab
Term | Definition |
---|---|
element | any pure substance that is made of only one kind of atom |
monotomic elements | have 1 atom in natural state |
diatomic elements | 2 atoms in the natural state |
periodicity | the repetition of certain properties at regular intervals when elements were placed in order of atomic mass |
metals | they belong to families with relatively few valence electrons |
electron affinity | deals with the strength of attraction of electrons to unbonded atoms |
electronegativity | deals with an atoms ability to attract and hold electrons when bonded to other atoms |
covalent bonds | non-metal/non-metal-sharing electrons |
ionic bonds | metal/non-metal-giving away and taking electrons |
metallic bonds | metal/metal-everyone shares the electrons |
non-metals | hold their electrons tightly so their properties are very different from metals |