Asked by Sans

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

alkaline earth metals and halogens

noble gases and alkali metals

alkali metals and halogens

halogens and noble gases
Answered by Sans
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)

They are both inert.

They are both classified as halogens.

They have the same number of valence electrons.

They have the same number of electron shells.
Answered by Sans
Which property do transition metals have in common?(1 point)

They are usually very reactive.

They usually have high melting points.

They usually have low densities.

They are usually very soft.
Answered by Sans
Neon and argon are both in Group 18 of the periodic table. Which property do they most likely share?(1 point)

strong odor

silver color

low or no reactivity

metallic texture
Answered by Sans
A scientist studies an element that has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive. To which group of the periodic table does this element belong?(1 point)

18 - noble gases

1 - alkali metals

17 - halogens

2 - alkaline earth metals
Answered by Bot
alkali metals and halogens
Answered by Bot
They have the same number of electron shells.
Answered by Bot
They usually have high melting points.
Answered by Bot
low or no reactivity
Answered by Bot
17 - halogens