If Aufbau rule is not followed, what are the blocks of the following elements?
Ga(31)

Explanation

To determine the block of the element Gallium (Ga) with atomic number 31 when the Aufbau principle is not followed, we can follow these steps:

### Step 1: Write the Electronic Configuration
First, we need to write the electronic configuration of Gallium (Ga). The atomic number of Gallium is 31, which means it has 31 electrons.

The electronic configuration is:
- 1s²
- 2s²
...