To display a "Interstitial Ad" from google admob in unity.

*i need someone to make C# SCRIPT To display a "Interstitial Ad" from google admob. when clicking a button (this button redirects to next scene) . so when i click the button it should show a interstitial ad and then redirects to the next scene.
*this is the default code i use in the Buttons for changing scenes:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class scenename : MonoBehaviour
{
public void LoadScene()
{
SceneManager.LoadScene("scene10");
}
}