The atomic number tells you ______ in a neutral atom.

The atomic number tells you the number of protons in a neutral atom.

Step 1: Understand the question The question is asking what information the atomic number of an atom provides.

Step 2: Recall the definition of atomic number The atomic number of an atom is defined as the number of protons in the nucleus of an atom.

Step 3: Apply the definition to a neutral atom In a neutral atom, the number of protons (positive charge) is equal to the number of electrons (negative charge). Therefore, the atomic number also indirectly tells you the number of electrons in a neutral atom.

Step 4: Answer the question So, the atomic number tells you the number of protons (and also the number of electrons in a neutral atom).