Video Transcript
In which of the following images of
the periodic table is the halogen group correctly highlighted?
We must identify the image that
highlights the periodic table group called the halogen group. On the periodic table, a group
refers to a vertical column of elements. The name “halogen” refers to one
column of elements that share various physical and chemical properties. Halogens are nonmetals. They are all diatomic elements. This means they are made up of
molecules that consist of two atoms bonded together.
So, for example, the first halogen
in the group is fluorine. The chemical formula for elemental
fluorine would be written as F2 to show that it is diatomic. The halogens include fluorine,
chlorine, bromine, iodine, and astatine. They are found in group 17 of the
periodic table. This group might also be referred
to as group seven A.
Let’s have a look at the groups on
the periodic table. The groups can be referred to as 1
through 18, labeled in green. Another way to refer to groups on
the periodic table is the A groups, which are labeled in pink. The second to last group that is
highlighted here in blue is the halogen group. The halogens are found in group
17. We can see that the image that
highlights this group is answer choice (D).
Therefore, the image of the
periodic table that correctly highlights the halogen group is answer choice (D).
