Question

if an element has 7 protons in the nucleus, how many neutrons will be present? 6 4 7 10

Explanation:

Step1: Identify the element

The element with 7 protons is nitrogen. Nitrogen - 14 is the most common isotope.

Step2: Recall isotope formula

For an isotope, the mass number (A) = number of protons (p) + number of neutrons (n). For nitrogen - 14, A = 14 and p = 7.

Step3: Calculate neutrons

We know that n=A - p. Substituting A = 14 and p = 7, we get n = 14 - 7 = 7.

Answer:

7