find the element:\nprotons: 7\nneutrons: 8\nelectrons: 10

Explanation:

Step1: Identify the element based on protons

The number of protons determines the element. The element with 7 protons is nitrogen (N).

Step2: Analyze the charge based on electrons

A neutral atom has equal number of protons and electrons. Here, protons = 7 and electrons = 10. So, the ion has a charge of (7 - 10=- 3).

Step3: Write the ion symbol

The ion is (N^{3 -}).

Answer:

(N^{3 -})