The Periodic Table Quick Check
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 classified as halogens.
They have the same number of valence electrons..
They have the same number of electron shells.
The correct statement about nitrogen (N) and phosphorus (P) is that they have the same number of valence electrons.
Which property do transition metals have in common?(1 point)
Responses
They usually have high melting points.
They are usually very soft.
They are usually very reactive.
They usually have low densities.
The correct property that transition metals have in common is that they usually have high melting points.
The Periodic Table Quick Check
4 of 54 of 5 Items
Question
Neon and argon are both in Group 18 of the periodic table. Which property do they most likely share?(1 point)
Responses
metallic texture
strong odor
silver color
low or no reactivity
The property that neon and argon are most likely to share is low or no reactivity.
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)
Responses
17 - halogens
18 - noble gases
2 - alkaline earth metals
1 - alkali metals