Question

1. there are three major divisions on the periodic table: the “s block”, the “d block” and the “p block”. where are these blocks of elements located? give the column numbers of their locations. (yes, there is also an “f block” but we won’t consider that now.) s block: columns ______ d block: columns ____ p block: columns ______

Explanation:

The s - block elements are in columns 1 and 2. The d - block elements are in columns 3 - 12. The p - block elements are in columns 13 - 18. This is based on the electron - filling order and the Aufbau principle. In the s - block, the outermost electrons are in s orbitals. For the d - block, the outermost electrons are in d orbitals (after some s - orbital filling in some cases). In the p - block, the outermost electrons are in p orbitals.

Answer:

s block: columns 1 - 2
d block: columns 3 - 12
p block: columns 13 - 18