chapter 5 section 2 Flashcards
elements in the s and p blocks of the periodic table are called
main group elements
elements in group 18 have
very low reactivity
nonmetallic elements in group 17 that react with most metals to form salts are
halogens
the outer level electron configuration of a neutral alkaline earth metal atom consists of
two electrons in the s orbital
in nature that alkali metals are found only in compounds because they
are very reactive elements
to which group does hydrogen belong
no group
an element found in groups 3-12 of the periodic table is classified as a
transition metal
the period number indicates the
highest energy level being filled
characteristics of the alkali metals
silvery appearance, soft, not found in nature as free elements, very reactive
characteristics of alkaline-earth metals
harder, denser, and stronger than the alkali metals. higher melting points, less reactive than alkali metals, too reactive to be found in nature.
the d block elements are metals with
typical metallic properties
characteristics of the transition elements
good conductors of electricity
high luster
the 6 metalloids
boron, silicon, germanium, arsenic, antimony, and tellurium
most reactive nonmetals
halogens
halogens react vigorously with ______ to form compounds known as ____
metals
salts
