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