Which two groups of elements in the periodic table are the most reactive?(1 point)
Responses
noble gases and alkali metals
noble gases and alkali metals
alkali metals and halogens
alkali metals and halogens
halogens and noble gases
halogens and noble gases
alkaline earth metals and halogens
alkali metals and halogens
Use the periodic table to answer the question.
An illustration shows the periodic table.
Which element has the same number of electron shells as tungsten (W)?
(1 point)
Responses
gold (Au)
gold (Au)
molybdenum (Mo)
molybdenum (Mo)
yttrium (Y)
yttrium (Y)
nickel (Ni)
nickel (Ni)
yttrium (Y)
se the periodic table to answer the question.
An illustration shows the periodic table.
Which element is a noble gas?
(1 point)
Responses
radon (Rn)
radon (Rn)
fluorine (F)
fluorine (F)
hydrogen (H)
hydrogen (H)
rubidium (Rb)
radon (Rn)
The Periodic Table Quick Check
4 of 44 of 4 Items
Question
Use the periodic table to answer the question.
An illustration shows the periodic table.
Which statement about nitrogen (N) and phosphorus (P) is correct?
(1 point)
Responses
They are both inert.
They are both inert.
They are both classified as halogens.
They are both classified as halogens.
They have the same number of electron shells.
They have the same number of electron shells.
They have the same number of valence electrons.