Question

use the electron configurations and the periodic table to answer the questions: which element is this? fluorine (f) carbon (c) nitrogen (n) oxygen (o)

Explanation:

Step1: Calculate the number of electrons

Each arrow represents an electron. There are \(2\) electrons in \(1s\), \(2\) electrons in \(2s\), and \(3\) electrons in \(2p\). So the total number of electrons \(N = 2 + 2+3=7\).

Step2: Determine the element

In a neutral atom, the number of electrons is equal to the atomic number. The element with atomic number \(7\) is nitrogen (\(N\)).

Answer:

nitrogen (\(N\))