Question

the element aluminum has an atomic number of 13. how many protons are in the nucleus of an aluminum atom? how many electrons does an aluminum atom have?

Explanation:

Step1: Protons in nucleus

The atomic number of an element is equal to the number of protons in its nucleus. Given that the atomic number of aluminum is 13, so the number of protons is 13.

Step2: Electrons in atom

In a neutral atom, the number of electrons is equal to the number of protons. Since the number of protons is 13, the number of electrons is also 13.

Answer:

13
13