Question

the mass number of a nitrogen atom is 14. find its atomic number in the periodic table shown. then determine the number of neutrons in its nucleus by subtracting the atomic number from the mass number. mass # - atomic # = # of neutrons for your ansewr only write this sentence and fill in the blank: there are _ neutrons.

Explanation:

Step1: Recall atomic number of nitrogen

Atomic number of nitrogen ($Z$) is 7 (from periodic table).

Step2: Use formula for neutrons

Formula: $\text{Number of neutrons} = \text{Mass number} (A) - \text{Atomic number} (Z)$
Given $A = 14$, $Z = 7$.
So, neutrons $= 14 - 7 = 7$.

Answer:

There are 7 neutrons.