Which two groups of elements in the periodic table are the most reactive?(1 point)

Question

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

Answer 1

alkali metals and halogens

Answer 2

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)

Answer 3

yttrium (Y)

Answer 4

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)

Answer 5

radon (Rn)

Answer 6

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.

Answer 7

They have the same number of valence electrons.