chp.6 chem study sesh.
Terms
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- Representative elements values tend to
- increase from left to right across a period
- elements can be sorted into
- noble gases, representative elements, transtistion metals, or inner transition metals based on their electron configurations
- Cations are always
- smaller than the atoms they form
- Mendeleev
- arranged the elements in his periodic table in order of increasing atmoic mass
- anions are always
- larger than the atom they form
- First ionization energy tends to
- decrease from top to bottom within a goup and increase from left to right across a period
- three classes of elements are
- metals, nonmetals, and metalloids
- in modern period tables, elements are arranged
- in order of increasing atomic number
- chemists used the properties of elements to
- sort them into groups
- In general, atomic size
- increases from top to bottom within a group and decrease from left to right across a period
- Electronegativity values
- decrease from top to bottom within a group.
- Positive and negative ions form when
- electrons are transferred between atoms