Question

1. how many protons and electrons does an argon atom have?

Explanation:

Step1: Recall Argon's Atomic Number

Argon (Ar) has an atomic number of 18. The atomic number is equal to the number of protons in an atom. So, the number of protons in an argon atom is 18.

Step2: Determine Electron Number (Neutral Atom)

In a neutral atom, the number of electrons is equal to the number of protons. Since argon is a neutral atom, the number of electrons is also equal to the number of protons. So, the number of electrons is 18.

Answer:

Protons: 18, Electrons: 18