What are inner transition metals composed of?
noble gases
halogens
lanthanides and actinides
metals
what are the elements in group 1a on the periodic table called?
alkaline earth metals
halogens
alkali metals
inner transition metals
how is the modern periodic table arranged?
by increasing ionic size
by increasing atomic number
by increasing electronegativity
by increase in atomic mass
where are the noble gases located on the periodic table?
in group 8a (far right-hand side)
in the middle
below the main body of the periodic table
in group 1a (far left-hand side)
which set of elements is in the order of decreasing conductivity?
ge, o, mn
o, ge, mn
mn, o, ge
mn, ge, o
tellurium is a metalloid.
how many valence electrons does tellurium have?
3
4
5
6
which element is a metalloid?
tellurium
calcium
sodium
argon
which set of elements is in the order of increasing malleability?
se, sb, sn
sn, sb, se
sb, sn, se
se, sn, sb
which element is a transuranium element?
erbium
lanthanum
holmium
californium
which group contains mostly radioactive elements?
inner transition metals
alkali metals
noble gases
alkaline earth metals
what type of element is chlorine?
alkaline earth metal
halogen
inner transition metal
metal
which classification is the most specific for the element europium?
actinide-series element
lanthanide-series element
transition metal
inner transition metal
which substance tends to form anions when bonding with other elements?
sodium
argon
oxygen
calcium
which example is a brittle solid?
bromine
chlorine
sulfur
neon
which element belongs to the p6-block of the periodic table?
alkali metals
halogens
noble gases
alkaline earth metals
which group of elements belongs to the f-block ?
metalloids
metals
nonmetals
inner transition metals
how many valence electrons are found in gallium?
3
5
7
8
helium (he) has two valence electrons, and these electrons are located in the 1s subshell.
without using the periodic table, in which group and period is helium located?
group 3a, period 3
group 6a, period 3
group 8a, period 1
group 3b, period 6
which group has two valence electrons?
alkali metals
alkaline earth metals
noble gases
halogens