Question

1. use the image to answer the question. 10 20.1797 ne he2s²2p⁶ neon how many neutrons does this element have? (round to the nearest whole number.)

Explanation:

Step1: Identify atomic number and atomic mass

The atomic number of Ne (Neon) is 10 (top - left number), and the atomic mass is approximately 20.1797 (top - right number).

Step2: Use the formula for number of neutrons

The formula for the number of neutrons $n$ is $n = \text{Atomic Mass}-\text{Atomic Number}$. Here, $n=20.1797 - 10$.

Step3: Round the result

$n = 20.1797-10=10.1797$. Rounding to the nearest whole number gives 10.

Answer:

10