Identify and name the element whose electronic configuration are given below :
`2,8,7`

Explanation

To identify and name the element with the electronic configuration `2, 8, 7`, we can follow these steps:

### Step 1: Understand the Electronic Configuration
The electronic configuration `2, 8, 7` indicates the distribution of electrons in the shells of an atom. The first shell can hold a maximum of 2 electrons, the second shell can hold a maximum of 8 electrons, and the third shell can hold more than 8 electrons.

### Step 2: Count the Total Number of Electrons
To find the total number of electrons, we add the electrons in all the shells:
- First shell: 2 electrons
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