Question

question 7. an atom that has 13 protons and 15 neutrons is an isotope of the element __________. nickel silicon aluminum phosphorus

Explanation:

Step1: Recall element - proton relationship

The atomic number of an element is equal to the number of protons in its nucleus.

Step2: Identify the element

An element with 13 protons has an atomic number of 13. Aluminum has an atomic number of 13.

Answer:

C. aluminum