Question

select the correct answer from each drop - down menu. an element has an atomic mass number of 16 and an atomic number of 7. the element has dropdown protons and dropdown neutrons.

Explanation:

Step1: Recall atomic number definition

The atomic number is equal to the number of protons. Given atomic number = 7, so the number of protons is 7.

Step2: Calculate number of neutrons

The atomic mass number is the sum of protons and neutrons. Let the number of neutrons be $n$. We know atomic mass number = 16 and number of protons = 7. Using the formula $atomic\ mass\ number=protons + neutrons$, we have $n=16 - 7$. So $n = 9$.

Answer:

The element has 7 protons and 9 neutrons.