Group 1 (alkali metals)
Where are the most active metals located?
Group 17 (halogens)
Where are the most active nonmetals located?
decreases; the increasing positive charge of the nucleus pulls electrons closer.
As you go from left to right across a period, the atomic size ____________. Why?
increases; the electrons are occupying sublevels in successively higher main energy levels
As you travel down a group, the atomic size ___________. Why?
larger
A negative ion is ____________ than its parent atom.
smaller
A positive ion is _____________ than its parent atom.
increases; the increasing nuclear charge, a higher charge more strongly attracts electrons in the same energy level
As you go from left to right across a period, the first ionization energy generally _____________. Why?
decreases; more electrons are between the nucleus and the valence electrons
As you go down a group, the first ionization energy generally ___________. Why?
Group 17 (halogens)
Where is the highest electronegativity found?
Groups 1 and 2 (alkali and alkaline earth metals)
Where is the lowest electronegativity found?
Alkali metals
Elements of Group 1 are called ____________.
Alkaline-earth metals
Elements of Group 2 are called _____________.
Transition metals
Elements of Group 3-12 are called _______________.
metals, nonmetals
As you go from left to right across the periodic table, the elements go from _______________ to _______________.
Halogens
Group 17 elements are called ___________.
Fluorine
The most active element in Group 17 is ___________.
Noble Gases
Group 18 elements are called ______________.
d and f
What sublevels are filing across the Transition Elements?
valence electrons
Elements within a group have a similar number of _______________.
atomic energy levels
Elements across a series have the same number of _________________.
(transitional) metal
A colored ion generally indicates a _________________.
more
As you go down a group, the elemetns generally become ____________ metallic.
metals
The majority of elements in the periodic table are __________.
atomic number
Elements in the periodic table are arranged according to their ______________.
metalloid
An element with both metallic and nonmetallic properties is called a __________.
