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

Question

Responses

alkaline earth metals and halogens
alkaline earth metals and halogens

noble gases and alkali metals
noble gases and alkali metals

halogens and noble gases
halogens and noble gases

alkali metals and halogens

Answer 1

The two groups of elements in the periodic table that are the most reactive are the 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

molybdenum (Mo)
molybdenum (Mo)

gold (Au)
gold (Au)

nickel (Ni)
nickel (Ni)

yttrium (Y)

Answer 3

Tungsten (W) is located 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.

Answer 4

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)

hydrogen (H)
hydrogen (H)

fluorine (F)
fluorine (F)

radon (Rn)

Answer 5

The element that is a noble gas is radon (Rn).

Answer 6

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 have the same number of electron shells.
They have the same number of electron shells.

They are both inert.
They are both inert.

They are both classified as halogens.