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
alkaline earth metals and halogens
alkaline earth metals and halogens
halogens and noble gases
halogens and noble gases
alkali metals and halogens
1 month ago
1 month ago
se 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
nickel (Ni)
nickel (Ni)
gold (Au)
gold (Au)
yttrium (Y)
yttrium (Y)
molybdenum (Mo)
1 month ago
Tungsten (W) is in period 6 of the periodic table, which means it has 6 electron shells. The element that has the same number of electron shells as tungsten is **gold (Au)**, which is also in period 6.
1 month ago
Use the periodic table to answer the question.
An illustration shows the periodic table.
Which element is a noble gas?
(1 point)
Responses
rubidium (Rb)
rubidium (Rb)
fluorine (F)
fluorine (F)
hydrogen (H)
hydrogen (H)
radon (Rn)
1 month ago
The element that is a noble gas is **radon (Rn)**.
1 month ago
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 have the same number of valence electrons.
They have the same number of valence electrons.
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.
1 month ago