Video Transcript
The periodic table below is divided
into different blocks. Which color area corresponds to the
s block?
The question tells us that the
periodic table is divided into different blocks. These blocks correspond to the
sublevel of the outermost electrons so are named s, p, d, and f. The red block is the s block. The blocks can be labeled further
so that the elements in the first period of the s block are called 1s. For the elements in this period,
their outermost electrons are found in the 1s sublevel. We define a period as a horizontal
row of chemical elements in the periodic table.
All elements in a row have the same
number of electron shells. The outermost electrons for the
elements in period two are found in the 2s sublevel. This pattern continues until period
seven. The orange block is known as the p
block. The elements found in this block
have their outermost electrons in sublevels ranging from 2p to 7p. The blue block is known as the d
block. The elements found in this block
have their outermost electrons in sublevels ranging from 3d to 6d. Lastly, the green block is known as
the f block. The outermost electrons for the
lanthanides are in the 4f sublevel, and the actinides, the 5f sublevel.
The question asks, “Which color
area corresponds to the s block?” The s block is shown by the red
area.
