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: Understand the Aufbau Principle
The Aufbau principle states that electrons occupy the lowest energy orbitals first before filling higher energy orbitals. This means that we fill the orbitals in the order of increasing energy levels.

### Step 2: Determine the Electron Configuration of Gallium
Gallium has an atomic number of 31, which means it has 31 electrons. The typical electron configuration following the Aufbau principle would be:
1. 1s²
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