__ 8. What block is group 1 and 2 located in, on the periodic table? a. p b. s c. d

## Step 1<br />The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties. Elements are presented in order of increasing atomic number.<br /><br />## Step 2<br />Group 1 and 2 elements on the periodic table are located in the "s" block. The "s" block consists of the first two groups of the periodic table, which include the alkali metals (Group 1) and alkaline earth metals (Group 2).<br /><br />## Step 3<br />The "p" block contains groups 13 to 18, and the "d" block contains the transition metals. Therefore, the correct answer is option "b".