Chemistry Period Table
Terms
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- credited for organizing elements
- Mendeleev
- elements in the same group have the same number of
- valence electrons
- elements in the same _____ are most chemically similar
- group
- group 1 elements are called
- Alkali Metals
- group 2 elements are called
- alkaline earth metals
- groups 3-12 elements are called
- transition elements
- these elements form colorful compounds
- transition elements
- these elements are all metals with few valence electrons
- transition elements
- the periodic table elements are organized based on
- atomic number
- The only element that is a liquid at STp
- Br
- These elements are gases at STP
- H, He, N, O, F, Cl, Ne, Ar, Kr, Xe, Rn
- group 17 elements are called
- halogens
- only group with all 3 phases
- halogens, group 17
- group 18 elements are called
- noble gases
- the elements of these groups are so active that cannot be found in their free state in nature, but can be separated by electrolysis
- 1, 2, and 17
- the elements of this group don't occure with other elements naturally
- group 18
- periods all have the same
- number of principle energy levels
- these elements are semi-metals or metalloidds
- B, Si, As, Te, At, Ge, Sb
- electronegativity
- ability to attract electrons
- electronegativity _________ from left to right
- increases
- ionization energy
- amt energy required to remove outermost electron shell
- ionization energy ________ from left to right
- increases
- atomic radius
- difference from nucleus to last energy shell
- atomic radious _______ from left to right
- decreases
-
Arrange from smallest to largest:
Rb, Rb +1, I, I -1 - I, I -1, Rb +1, Rb
-
more metallic means
more nonmetallic means -
gains electrons more easily
loses electrons more easily (higher electronegativity) - periods 6 and 7 are what and do what?
- the lanthamoid and actinoid series
-
new elements end in ___
1-
2-
3-
4-
5-
6-
7-
8-
9- -
ium
un
bi
tri
quad
pent
hex
sept
oct
ehn
nil - these three elements will react with F+O in a laboratory
- Kr, X, Rh