Question

how many protons does this atom have? how many neutrons does this atom have? how many electrons does this atom have?

Explanation:

Step1: Identify protons

Protons are the positively - charged particles in the nucleus. Count the blue spheres with a + sign in the nucleus.

Step2: Identify neutrons

Neutrons are neutral particles in the nucleus. Count the red spheres in the nucleus.

Step3: Identify electrons

Electrons are the negatively - charged particles outside the nucleus. Count the green spheres outside the nucleus.

Answer:

Number of protons: <Count of blue + spheres in nucleus>
Number of neutrons: <Count of red spheres in nucleus>
Number of electrons: <Count of green spheres outside nucleus>