Consider an element `""_(15^(31)X` and answer the following questions
What is its electronic configuration?

Explanation

To determine the electronic configuration of the element with atomic number 15 and mass number 31, we can follow these steps:

### Step 1: Identify the number of electrons
The atomic number of the element is 15. This means it has 15 protons and, in a neutral atom, it will also have 15 electrons.

### Step 2: Fill the electron shells
We fill the electron shells according to the maximum capacity of each shell:
- The **K shell** can hold a maximum of 2 electrons.
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